Administrator's Reference
Use this command to define a device class to support the sequential access
devices at your installation.
Note: | The DISK device class is predefined by TSM and cannot be modified with the
DEFINE DEVCLASS command.
|
The syntax and parameter descriptions are provided according to the device
type. The syntax and parameter information is presented in the
following order:
Privilege Class
To issue this command, you must have system privilege or unrestricted
storage privilege.
Syntax
>>-DEFine DEVclass--device_class_name----DEVType--=--FILE------->
.-MOUNTLimit--=--1----------------.
>-----+---------------------------------+----------------------->
'-MOUNTLimit--=--mountlimitvalue--'
.-MAXCAPacity--=--4M----.
>-----+-----------------------+--------------------------------->
'-MAXCAPacity--=--size--'
.-DIRectory--=--current_directory_name--.
>-----+---------------------------------------+----------------><
'-DIRectory--=--directory_name----------'
Parameters
- device_class_name (Required)
- Specifies the name of the device class to be defined. The maximum
length of the device class name is 30 characters.
- DEVType=FILE (Required)
- Specifies that the FILE device type is assigned to the device
class. FILE indicates that a file is assigned to this device
class. When the server needs to access a volume that belongs to this
device class, it opens a file and reads or writes file data. A file is
a form of sequential access media.
- MOUNTLimit
- Specifies the maximum number of files that can be simultaneously open for
input/output. This parameter is optional. The default value is
1. You can specify a number from 1 to 256.
- MAXCAPacity
- Specifies the maximum size of any data storage files defined to a storage
pool in this device class. This parameter is optional. You must
specify this value as an integer followed by K (Kilobytes),
M (Megabytes), or G (Gigabytes).
For example, MAXCAPACITY=5M specifies that the maximum capacity for a
volume in this device class is 5 megabytes. The default value is 4MB
(MAXCAPACITY=4M). The minimum value allowed is 100KB
(MAXCAPACITY=100K). The maximum value is 128GB
(MAXCAPACITY=128G).
- DIRectory
- Specifies the directory location of the file used in this device
class. This parameter is optional. The default is the current
working directory of the server at the time the command is issued, unless the
DSMSERV_DIR environment variable has been set. For additional
information about the DSMSERV_DIR variable, refer to Quick
Start.
By specifying a directory name, you identify the location where the server
places the files that represent storage volumes for this device class.
While processing the command, the server expands the specified directory name
into its fully qualified form, starting from the root directory.
Later, if the server needs to allocate a scratch volume, it creates a new
file in this directory. For scratch volumes used to store client data,
the file created by the server has a file name extension of
.BFS. For scratch volumes used to store export data, a file name
extension of .EXP is used. For example, if you define a device
class with a DIRECTORY of /TSMSTOR and the server needs a
scratch volume in this device class to store export data, the file that the
server creates may be named
/TSMSTOR/00566497.EXP.
Examples
Task
Define a device class named PLAINFILES with a file device type and a
maximum capacity of 50MB.
- Command:
- define devclass plainfiles devtype=file maxcapacity=50m
Privilege Class
To issue this command, you must have system privilege or unrestricted
storage privilege.
Syntax
>>-DEFine DEVclass--device_class_name----DEVType--=--SERVER----->
.-MAXCAPacity--=--500M----.
>-----SERVERName--=--server_name----+-------------------------+->
'-MAXCAPacity--=--maxcap--'
.-MOUNTLimit--=--1----------------.
>-----+---------------------------------+----------------------->
'-MOUNTLimit--=--mountlimitvalue--'
.-MOUNTRetention--=--60-------.
>-----+-----------------------------+--------------------------->
'-MOUNTRetention--=--minutes--'
.-PREFIX--=--ADSM----------.
>-----+--------------------------+------------------------------>
'-PREFIX--=--+-ADSM------+-'
'-volprefix-'
.-RETRYPeriod--=--10-------------------.
>-----+--------------------------------------+------------------>
'-RETRYPeriod--=--retryvalue(minutes)--'
.-RETRYInterval--=--30-------------------.
>-----+----------------------------------------+---------------><
'-RETRYInterval--=--retryvalue(seconds)--'
Parameters
- device_class_name (Required)
- Specifies the name of the device class to be defined. The maximum
length of the device class name is 30 characters.
- DEVType=SERVER (Required)
- Specifies a remote connection that supports virtual volumes.
- SERVERName (Required)
- Specifies the name of the server. The SERVERNAME parameter must
match a defined server.
Note: | If you change the SERVERNAME of an existing server to a new name, data on the
volumes under the old SERVERNAME will no longer be accessible with this device
class.
|
- MAXCAPacity
- Specifies the maximum size that objects can be when created on the target
server; the default for this value is 500M. This parameter is
optional. You must specify this value as an integer followed by
K (Kilobytes), M (Megabytes), or G
(Gigabytes).
For example, MAXCAPACITY=5M specifies that the maximum capacity for a
volume in this device class is 5 megabytes. The default value is 500M
(MAXCAPACITY=500M). The minimum value allowed is 100KB
(MAXCAPACITY=100K).
- MOUNTLimit
- Specifies the maximum number of volumes that can be simultaneously open
for input/output. This parameter is optional. The default value
is 1. You can specify a number from 1 to 256.
- MOUNTRetention
- Specifies the number of minutes to retain an idle connection with the
target server before closing the connection. This parameter is
optional. The default value is 60. You can specify a number from
0 to 9999.
This parameter can improve response time for sequential access media mounts
by leaving previously mounted volumes online.
- PREFIX
- Specifies the beginning portion of the high-level archive file name on the
target server. This parameter is optional. The default value is
ADSM. The maximum length of this prefix is 8 characters.
Values specified for this parameter must meet the following
conditions:
- The value is to be made up of qualifiers, which can contain up to 8
characters (including periods). For example, the following value would
be acceptable:
AB.CD2.E
- The qualifiers must be separated by a single period.
- The first letter of each qualifier must be alphabetical or national
(@,#,$), followed by alphabetical, national, hyphen, or numeric
characters.
An example of a high level archive file name using the default prefix (with
the TSM qualifier added) is ADSM.volume1.
- RETRYPeriod
- Specifies the retry period in minutes. The retry period is the
interval during which the server attempts to contact a target server if there
is a suspected communications failure. This parameter is
optional. The default value is 10 minutes.
- RETRYInterval
- Specifies the retry interval in seconds. The retry interval is how
often retries are done within a given time period. This parameter is
optional. The default value is 30 seconds.
Privilege Class
To issue this command, you must have system privilege or unrestricted
storage privilege.
Syntax
>>-DEFine DEVclass--device_class_name----DEVType--=--4MM-------->
.-FORMAT--=--DRIVE-----.
>-----+----------------------+--LIBRary--=--library_name-------->
'-FORMAT--=--+-DRIVE-+-'
+-DDS1--+
+-DDS1C-+
+-DDS2--+
+-DDS2C-+
+-DDS3--+
+-DDS3C-+
+-DDS4--+
'-DDS4C-'
.-MOUNTRetention--=--60-------.
>-----+-----------------------------+--------------------------->
'-MOUNTRetention--=--minutes--'
.-PREFIX--=--ADSM--------------.
>-----+------------------------------+-------------------------->
'-PREFIX--=--+-ADSM----------+-'
'-tapevolprefix-'
.-MOUNTWait--=--60-------.
>-----+-----------------------+---+------------------------+---->
'-ESTCAPacity--=--size--' '-MOUNTWait--=--minutes--'
.-MOUNTLimit--=--DRIVES--------------.
>-----+------------------------------------+-------------------><
'-MOUNTLimit--=--+-DRIVES----------+-'
+-mountlimitvalue-+
'-0---------------'
Parameters
- device_class_name (Required)
- Specifies the name of the device class to be defined. The maximum
length of the device class name is 30 characters.
- DEVType=4MM (Required)
- Specifies that the 4MM device type is assigned to the device class.
The 4MM indicates that 4mm tape devices are assigned to this device
class.
- FORMAT
- Specifies the recording format to be used when writing data to sequential
access media. This parameter is optional; the default value is
DRIVE. Tape capacities are provided using their uncompressed
values; hardware compression significantly increases these capacity
values.
The following are possible values for 4mm devices:
- DRIVE
- Specifies that TSM selects the highest format that can be supported by the
sequential access drive on which a volume is mounted.
Attention: Avoid specifying the DRIVE value when a mixture of
devices is used within the same library. For example, if you have
drives that support recording formats superior to other drives in a library,
do not specify the FORMAT=DRIVE option.
- DDS1
- Specifies that TSM writes data using the DDS-1 recording format for 4mm
tapes, without compression. This format results in an uncompressed
cartridge capacity of 1.3GB on 60-meter tape or 2GB on 90-meter
tape. This format only applies to 60- and 90-meter tapes.
- DDS1C
- Specifies that TSM writes data using the DDS-1 recording format for 4mm
tapes, with compression enabled. This results in a cartridge capacity
of approximately 1.3GB on a 60-meter tape or 2GB on a 90-meter
tape. However, this format uses the tape drive hardware compression
feature so the actual capacity may be greater depending on the effectiveness
of compression. This format only applies to 60- and 90-meter
tapes.
- DDS2
- Specifies that TSM writes data using the DDS-2 recording format for 4mm
tapes, without compression. This format results in a cartridge capacity
of 4GB on 120 meter tape. This format only applies to 120-meter
tape.
- DDS2C
- Specifies that TSM writes data using the DDS-2 recording format for 4mm
tapes, with compression. This format results in a cartridge capacity of
approximately 8GB on 120-meter tape. However, this format uses the tape
drive hardware compression feature so the actual capacity may be greater
depending on the effectiveness of compression. This format only applies
to 120-meter tape.
- DDS3
- Specifies that TSM writes data using the DDS-3 recording format for 4mm
tapes, without compression. This format results in a cartridge capacity
of 12GB on 125-meter tape. This format only applies to 125-meter
tape.
- DDS3C
- Specifies that TSM writes data using the DDS-3 recording format for 4mm
tapes, with compression. This format results in a cartridge capacity of
approximately 24GB on 125-meter tape. This format uses the tape drive
hardware compression feature, so the actual capacity may be greater than
24GB. This format only applies to 125-meter tape.
- DDS4
- Specifies that TSM writes data that uses the DDS-4 recording format for
4mm tapes, without compression. This format results in a cartridge
capacity of 20GB on 150-meter tape. This format only applies to
150-meter tape.
- DDS4C
- Specifies that TSM writes data that uses the DDS-4C recording
format. This format results in a cartridge capacity of approximately
40GB on 150-meter tape. This format uses the tape drive hardware
compression feature, so the actual capacity may be more than 40GB. This
format only applies to 150-meter tape.
- LIBRary
- Specifies the name of the defined library object that contains the 4mm
tape drives used by this device class. For information about defining a
library object, see the DEFINE LIBRARY command.
- MOUNTRetention
- Specifies the number of minutes to retain an idle sequential access volume
before dismounting it. This parameter is optional. The default
value is 60. You can specify a number from 0 to 9999.
This parameter can improve response time for sequential access media mounts
by leaving previously mounted volumes online. However, for EXTERNAL
library types (that is, a library managed by an external media management
system), set this parameter to a low value (for example, two minutes) to
enhance device sharing between applications.
- PREFIX
- Specifies the high level qualifier of the file name that the server writes
into the sequential access media labels. For each sequential access
volume assigned to this device class, TSM uses this prefix to create the data
set name. This parameter is optional. The default value is
ADSM. The maximum length of this prefix is 8 characters.
If you have already established a media label naming convention that
supports your current management system, use a volume prefix that conforms to
your naming conventions.
Values specified for this parameter must meet the following
conditions:
- The value is to be made up of qualifiers, which can contain up to 8
characters (including periods). For example, the following value would
be acceptable:
AB.CD2.E
- The qualifiers must be separated by a single period.
- The first letter of each qualifier must be alphabetical or national
(@,#,$), followed by alphabetical, national, hyphen, or numeric
characters.
An example of a tape volume data set name using the default prefix (with
the TSM qualifier added) is ADSM.BFS.
- ESTCAPacity
- Specifies the estimated capacity for the sequential access volumes
categorized by this device class. This parameter is optional.
You can specify this parameter if the default estimated capacity for the
device class is inaccurate due to compression of data.
You must specify this value as an integer followed by K
(Kilobytes), M (Megabytes), or G (Gigabytes).
For example, ESTCAPACITY=5M specifies that the estimated capacity for a
volume in this device class is 5 megabytes. The smallest value allowed
is 100KB (that is, ESTCAPACITY=100K).
For more information on the default estimated capacity for 4mm tapes, see Table 49.
Table 49. TSM Default Estimated Capacity for 4mm Tape
Tape Format
| Estimated Capacity
|
DDS1
| 2.0GB
|
DDS1C
| 2.0GB (see note)
|
DDS2
| 4.0GB
|
DDS2C
| 4.0GB (see note)
|
DDS3
| 12.0GB
|
DDS3C
| 24.0GB (see note)
|
DDS4
| 20.0GB
|
DDS4C
| 40.0GB (see note)
|
Note: | This format uses the tape drive hardware compression feature.
Depending on the effectiveness of compression, the actual capacity may be
greater than the listed value.
|
|
- MOUNTWait
- Specifies the maximum number of minutes to wait for a sequential access
volume to be mounted in a manual library. This parameter is optional
and does not apply to automated libraries. If the mount request is not
satisfied within the specified amount of time, the mount request is
canceled. The default value is 60 minutes. You can specify a
number from 0 to 9999.
- MOUNTLimit
- Specifies the maximum number of sequential access volumes that can be
simultaneously mounted for the device class. This parameter is
optional. The default is DRIVES. You can specify a number from 0
to 256.
Note: | Specify the number of drives for the library as the MOUNTLIMIT value.
For libraries not managed by ADSM (EXTERNAL library type), do not use the
DRIVES default for the MOUNTLIMIT value.
|
The following are possible values:
- DRIVES
- Specifies that every time a mount point is allocated, the number of drives
defined to the library is used to calculate the true mountlimit value
(including online status).
- mountlimitvalue
- Specifies the maximum number of drives used concurrently in this device
class by TSM. This value must never exceed the number of drives that
are defined and online in the library that services this device class.
- 0 (zero)
- Specifies that no new transactions can gain access to the storage
pool.
Privilege Class
To issue this command, you must have system privilege or unrestricted
storage privilege.
Syntax
>>-DEFine DEVclass--device_class_name----DEVType--=--8MM-------->
.-FORMAT--=--DRIVE-----.
>-----+----------------------+--LIBRary--=--library_name-------->
'-FORMAT--=--+-DRIVE-+-'
+-8200--+
+-8200C-+
+-8500--+
+-8500C-+
+-8900--+
+-8900C-+
+-AIT---+
'-AITC--'
.-MOUNTRetention--=--60-------.
>-----+-----------------------------+--------------------------->
'-MOUNTRetention--=--minutes--'
.-PREFIX--=--ADSM--------------.
>-----+------------------------------+-------------------------->
'-PREFIX--=--+-ADSM----------+-'
'-tapevolprefix-'
.-MOUNTWait--=--60-------.
>-----+-----------------------+---+------------------------+---->
'-ESTCAPacity--=--size--' '-MOUNTWait--=--minutes--'
.-MOUNTLimit--=--DRIVES--------------.
>-----+------------------------------------+-------------------><
'-MOUNTLimit--=--+-DRIVES----------+-'
+-mountlimitvalue-+
'-0---------------'
Parameters
- device_class_name (Required)
- Specifies the name of the device class to be defined. The maximum
length of the device class name is 30 characters.
- DEVType=8MM (Required)
- Specifies that the 8MM device type is assigned to the device class.
8MM indicates that 8mm tape devices are assigned to this device class.
- FORMAT
- Specifies the recording format to be used when writing data to sequential
access media. This parameter is optional; the default value is
DRIVE.
Possible values for 8mm devices:
- DRIVE
- Specifies that TSM selects the highest format that can be supported by the
sequential access drive on which a volume is mounted.
Note: | Avoid specifying the DRIVE value when a mixture of devices is used within the
same library. For example, if you have drives that support recording
formats superior to other drives in a library, do not specify the
FORMAT=DRIVE option.
|
- 8200
- Specifies that TSM writes data using the 8200 recording format.
This results in a tape capacity of 2.3GB when using standard 112-meter
tape cartridges.
- 8200C
- Specifies that TSM writes data using the 8200C recording format.
This results in a tape capacity of approximately 2.3GB when using
standard 112-meter tape cartridges. However, this format uses the tape
drive's hardware compression feature so the actual capacity may be greater
than 2.3GB depending on the effectiveness of the compression
feature.
- 8500
- Specifies that TSM writes data using the 8500 recording format.
This results in a tape capacity of 5.0GB when using standard 112-meter
tape cartridges.
- 8500C
- Specifies that TSM writes data using the 8500C recording format.
This results in a tape capacity of at least 5.0GB when using standard
112-meter tape cartridges. However, this format uses the tape
drive's hardware compression feature so the actual capacity of the
cartridge may be greater than 5.0GB depending on the effectiveness of
the compression feature.
- 8900
- Specifies that TSM writes data using the 8900 recording format.
This results in a tape capacity of 5.0GB when using standard 112-meter
tape cartridges.
- 8900C
- Specifies that TSM writes data using the 8900 recording format.
This results in a tape capacity of 10.0GB when using standard 112-meter
tape cartridges.
- AIT
- Specifies that TSM writes data using the AIT recording format. This
results in a tape capacity of at least 25.0GB when using Sony's
AIT cartridges.
- AITC
- Specifies that TSM writes data using the AITC recording format.
This results in a tape capacity of at least 60.0GB when using
Sony's AIT cartridges. This format uses the tape drive's
hardware compression feature so the actual capacity of the cartridge may be
greater than 60.0GB depending on the effectiveness of the
compression.
- LIBRary
- Specifies the name of the defined library object that contains the 8mm
tape drives used by this device class. For information about defining a
library object, see the DEFINE LIBRARY command.
- MOUNTRetention
- Specifies the number of minutes to retain an idle sequential access volume
before dismounting it. This parameter is optional. The default
value is 60. You can specify a number from 0 to 9999.
This parameter can improve response time for sequential access media mounts
by leaving previously mounted volumes online. However, for EXTERNAL
library types (that is, a library managed by an external media management
system), set this parameter to a low value (for example, two minutes) to
enhance device sharing between applications.
- PREFIX
- Specifies the high level qualifier of the data set name that the server
writes into the sequential access media labels. For each sequential
access volume assigned to this device class, TSM uses this prefix to create
the data set name. This parameter is optional. The default value
is ADSM. The maximum length of this prefix is 8 characters.
If you have already established a media label naming convention that
supports your current management system, use a volume prefix that conforms to
your naming conventions. Values specified for this parameter must meet
the following conditions:
- The value is to be made up of qualifiers, which can contain up to 8
characters (including periods). For example, the following value would
be acceptable:
AB.CD2.E
- The qualifiers must be separated by a single period.
- The first letter of each qualifier must be alphabetical or national
(@,#,$), followed by alphabetical, national, hyphen, or numeric
characters.
An example of a tape volume data set name using the default prefix (with
the TSM qualifier added) is ADSM.BFS.
- ESTCAPacity
- Specifies the estimated capacity for the sequential access volumes
categorized by this device class. This parameter is optional.
You can specify this parameter if the default estimated capacity for the
device class is inaccurate due to compression of data.
You must specify this value as an integer followed by K
(Kilobytes), M (Megabytes), or G (Gigabytes).
For example, ESTCAPACITY=5M specifies that the estimated capacity for a
volume in this device class is 5 megabytes. The smallest value allowed
is 100KB (that is, ESTCAPACITY=100K).
Table 50. TSM Default Estimated Capacity for 8mm Tape
Tape Format
| Estimated Capacity
|
8200
| 2.3GB
|
8200C
| 2.3GB (see note)
|
8500
| 5.0GB
|
8500C
| 5.0GB (see note)
|
8900
| 5.0GB
|
8900C
| 10.0GB
|
AIT
| 25.0GB
|
AITC
| 60.0GB (see note)
|
Note: | This format uses the tape drive hardware compression feature.
Depending on the effectiveness of compression, the actual capacity may be
greater than the listed value.
|
|
- MOUNTWait
- Specifies the maximum number of minutes to wait for a sequential access
volume to be mounted in a manual library. This parameter is optional
and does not apply to automated libraries. If the mount request is not
satisfied within the specified amount of time, the mount request is
canceled. The default value is 60 minutes. You can specify a
number from 0 to 9999.
- MOUNTLimit
- Specifies the maximum number of sequential access volumes that can be
simultaneously mounted for the device class. This parameter is
optional. The default is DRIVES. You can specify a number from 0
to 256.
Note: | For EXTERNAL library types, do not use the DRIVES default for the MOUNTLIMIT
value. Specify the number of drives for the library as the MOUNTLIMIT
value.
|
The following are possible values:
- DRIVES
- Specifies that every time a mount point is allocated, the number of drives
defined to the library is used to calculate the true mountlimit value
(including online status).
- mountlimitvalue
- Specifies the maximum number of drives used concurrently in this device
class by TSM. This value must never be allowed to exceed the number of
drives that are defined and online in the library that services this device
class.
- 0 (zero)
- Specifies that no new transactions can gain access to the storage
pool.
Examples
Task
Define a device class named 8MMTAPE for an 8mm device in a library named
AUTO. The format is DRIVE, mount limit is 2, mount retention is 10,
tape volume prefix is named ADSMVOL, and the estimated capacity is 6GB.
- Command:
- define devclass 8mmtape devtype=8mm library=auto
format=drive mountlimit=2 mountretention=10 prefix=adsmvol
estcapacity=6G
Privilege Class
To issue this command, you must have system privilege or unrestricted
storage privilege.
Syntax
>>-DEFine DEVclass--device_class_name----DEVType--=--DLT-------->
.-FORMAT--=--DRIVE------.
>-----+-----------------------+--LIBRary--=--library_name------->
'-FORMAT--=--+-DRIVE--+-'
+-DLT10--+
+-DLT10C-+
+-DLT15--+
+-DLT15C-+
+-DLT20--+
+-DLT20C-+
+-DLT30--+
+-DLT30C-+
+-DLT35--+
+-DLT35C-+
+-DLT40--+
'-DLT40C-'
.-MOUNTRetention--=--60-------.
>-----+-----------------------------+--------------------------->
'-MOUNTRetention--=--minutes--'
.-PREFIX--=--ADSM--------------.
>-----+------------------------------+-------------------------->
'-PREFIX--=--+-ADSM----------+-'
'-tapevolprefix-'
.-MOUNTWait--=--60-------.
>-----+-----------------------+---+------------------------+---->
'-ESTCAPacity--=--size--' '-MOUNTWait--=--minutes--'
.-MOUNTLimit--=--DRIVES--------------.
>-----+------------------------------------+-------------------><
'-MOUNTLimit--=--+-DRIVES----------+-'
+-mountlimitvalue-+
'-0---------------'
Parameters
- device_class_name (Required)
- Specifies the name of the device class to be defined. The maximum
length of the device class name is 30 characters.
- DEVType=DLT (Required)
- Specifies that the DLT device type is assigned to the device class.
DLT indicates that DLT tape devices are assigned to this device class.
- FORMAT
- Specifies the recording format to be used when writing data to sequential
access media. This parameter is optional; the default value is
DRIVE.
These are the possible values for DLT devices:
- DRIVE
- Specifies that TSM selects the highest format that can be supported by the
sequential access drive on which a volume is mounted.
Note: | Avoid specifying the DRIVE value when a mixture of devices is used within the
same library. For example, if you have drives that support recording
formats superior to other drives in a library, do not specify the
FORMAT=DRIVE option.
|
- DLT10
- Specifies that TSM writes data using the DLT10 recording format.
This results in a tape capacity of approximately 10.0GB when using
CompacTape III or CompacTape IV cartridges.
- DLT10C
- Specifies that TSM writes data using the DLT10C recording format.
This results in a tape capacity of approximately 20.0GB when using
CompacTape III and CompacTape IV cartridges. However, this format uses
the tape drive's hardware compression feature so the actual capacity may
be greater than 20.0GB depending on the effectiveness of the
compression feature.
- DLT15
- Specifies that TSM writes data using the DLT15 recording format.
This results in a tape capacity of approximately 15.0GB when using
CompacTape III or CompacTape IV cartridges.
Note: | DLT15 and DLT15C can only be used on CompacTape IIIxt or IV cartridges, not
CompacTape III. DLT15 and DLT15C are only valid with DLT2000XT, DLT4000
and DLT7000.
|
- DLT15C
- Specifies that TSM writes data using the DLT15C recording format.
This results in a tape capacity of approximately 30.0GB when using
CompacTape III or CompacTape IV cartridges. However, this format uses
the tape drive's hardware compression feature so the actual capacity may
be greater than 30.0GB depending on the effectiveness of the
compression feature.
Note: | DLT15 and DLT15C can only be used on CompacTape IIIxt or IV cartridges, not
CompacTape III. DLT15 and DLT15C are only valid with DLT2000XT, DLT4000
and DLT7000.
|
- DLT20
- Specifies that TSM writes data using the DLT20 recording format.
This results in a tape capacity of approximately 20.0GB when using
CompacTape IV cartridges.
Note: | The DLT20 format can only be used with CompacTape IV cartridges in a DLT4000
and DLT7000 drive.
|
- DLT20C
- Specifies that TSM writes data using the DLT20C recording format.
This results in a tape capacity of approximately 40.0GB when using
CompacTape IV cartridges. However, this format uses the tape
drive's hardware compression feature so the actual capacity of the
cartridge may be greater than 40.0GB depending on the effectiveness of
the compression feature.
Note: | The DLT20 format can only be used with CompacTape IV cartridges in a DLT4000
and DLT7000 drive.
|
- DLT30
- Specifies that TSM writes data using the DLT30 recording format.
This results in a tape capacity of approximately 30.0GB when using
CompacTape IV cartridges.
Note: | DLT30 and DLT30C can only be used with CompacTape IV cartridges.
|
- DLT30C
- Specifies that TSM writes data using the DLT30C recording format.
This results in a tape capacity of approximately 70.0GB when using
CompacTape IV cartridges. However, this format uses the tape
drive's hardware compression feature so the actual capacity of the
cartridge may be greater than 70.0GB depending on the effectiveness of
the compression feature.
Note: | DLT30 and DLT30C can only be used with CompacTape IV cartridges.
|
- DLT35
- Specifies that TSM writes data using the DLT35 recording format.
This results in a tape capacity of approximately 35.0GB when using
CompacTape IV cartridges.
Note: | DLT35 and DLT35C can only be used with CompacTape IV cartridges.
|
- DLT35C
- Specifies that TSM writes data using the DLT35C recording format.
This results in a tape capacity of approximately 70.0GB when using
CompacTape IV cartridges. However, this format ses the tape drive's
hardware compression feature so the actual capacity of the cartridge may be
greater than 70.0GB depending on the effectiveness of the compression
feature.
Note: | DLT35 and DLT35C can only be used with CompacTape IV cartridges.
|
- DLT40
- Specifies that TSM writes data using the DLT40 recording format.
This results in a tape capacity of approximately 40.0GB when using
CompacTape IV cartridges.
Note: | Use this format only with cartridges in a DLT8000 drive.
|
- DLT40C
- Specifies that TSM writes data using the DLT40C recording format.
This results in a tape capacity of approximately 80.0GB when using
CompacTape IV cartridges. This format, however, uses the tape
drive's hardware compression feature, so the actual capacity of the
cartridge may be greater 80.0GB, depending on the effectiveness of
compression feature.
Note: | Use this format only with cartridges in a DLT8000 drive.
|
- LIBRary
- Specifies the name of the defined library object that contains the DLT
tape drives used by this device class. For information about defining a
library object, see the DEFINE LIBRARY command.
- MOUNTRetention
- Specifies the number of minutes to retain an idle sequential access volume
before dismounting it. This parameter is optional. The default
value is 60. You can specify a number from 0 to 9999.
This parameter can improve response time for sequential access media mounts
by leaving previously mounted volumes online. However, for EXTERNAL
library types (that is, a library managed by an external media management
system), set this parameter to a low value (for example, two minutes) to
enhance device sharing between applications.
- PREFIX
- Specifies the high level qualifier of the data set name that the server
writes into the sequential access media labels. For each sequential
access volume assigned to this device class, TSM uses this prefix to create
the data set name. This parameter is optional. The default value
is ADSM. The maximum length of this prefix is 8 characters.
If you have already established a media label naming convention that
supports your current management system, use a volume prefix that conforms to
your naming conventions.
Values specified for this parameter must meet the following
conditions:
- The value is to be made up of qualifiers, which can contain up to 8
characters (including periods). For example, the following value would
be acceptable:
AB.CD2.E
- The qualifiers must be separated by a single period.
- The first letter of each qualifier must be alphabetical or national
(@,#,$), followed by alphabetical, national, hyphen, or numeric
characters.
An example of a tape volume data set name using the default prefix (with
the TSM qualifier added) is ADSM.BFS.
- ESTCAPacity
- Specifies the estimated capacity for the sequential access volumes
categorized by this device class. This parameter is optional.
You can specify this parameter if the default estimated capacity for the
device class is inaccurate due to compression of data.
You must specify this value as an integer followed by K
(Kilobytes), M (Megabytes), or G (Gigabytes).
For example, ESTCAPACITY=5M specifies that the estimated capacity for a
volume in this device class is 5 megabytes. The smallest value allowed
is 100KB (that is, ESTCAPACITY=100K).
Table 51. TSM Default Estimated Capacity for DLT
Tape Format
| Estimated Capacity
|
DLT10
| 10.0GB
|
DLT10C
| 10.0GB (see note)
|
DLT15
| 15.0GB
|
DLT15C
| 15.0GB (see note)
|
DLT20
| 20.0GB
|
DLT20C
| 20.0GB (see note)
|
DLT30
| 35.0GB
|
DLT30C
| 70.0GB (see note)
|
DLT35
| 35.0GB
|
DLT35C
| 70.0GB (see note)
|
DLT40
| 40.0GB
|
DLT40C
| 80.0GB (see note)
|
Note: | This format uses the tape drive hardware compression feature.
Depending on the effectiveness of compression, the actual capacity may be
greater than the listed value.
|
|
- MOUNTWait
- Specifies the number of minutes to wait for a sequential access volume to
be mounted in a manual library. This parameter is optional and does not
apply to automated libraries. If the mount request is not satisfied
within the specified amount of time, the mount request is canceled. The
default value is 60 minutes. You can specify a number from 0 to
9999.
- MOUNTLimit
- Specifies the maximum number of sequential access volumes that can be
simultaneously mounted for the device class. This parameter is
optional. The default is DRIVES. You can specify a number from 0
to 256.
Note: | For EXTERNAL library types, do not use the DRIVES default for the MOUNTLIMIT
value. Specify the number of drives for the library as the MOUNTLIMIT
value.
|
The following are possible values:
- DRIVES
- Specifies that every time a mount point is allocated, the number of drives
defined to the library is used to calculate the true mountlimit value
(including online status).
- mountlimitvalue
- Specifies the maximum number of drives used concurrently in this device
class by TSM. This value must never exceed the number of drives that
are defined and online in the library that services this device class.
- 0 (zero)
- Specifies that no new transactions can gain access to the storage
pool.
Privilege Class
To issue this command, you must have system privilege or unrestricted
storage privilege.
Syntax
>>-DEFine DEVclass--device_class_name----DEVType--=--DTF-------->
>-----FORMAT--=--+-DRIVE-+--LIBRary--=--library_name------------>
'-DTF---'
.-MOUNTRetention--=--60-------.
>-----+-----------------------------+--------------------------->
'-MOUNTRetention--=--minutes--'
.-PREFIX--=--ADSM--------------.
>-----+------------------------------+-------------------------->
'-PREFIX--=--+-ADSM----------+-'
'-tapevolprefix-'
.-MOUNTWait--=--60-------.
>-----+-----------------------+---+------------------------+---->
'-ESTCAPacity--=--size--' '-MOUNTWait--=--minutes--'
.-MOUNTLimit--=--DRIVES--------------.
>-----+------------------------------------+-------------------><
'-MOUNTLimit--=--+-DRIVES----------+-'
+-mountlimitvalue-+
'-0---------------'
Parameters
- device_class_name (Required)
- Specifies the name of the device class to be defined. The maximum
length of the device class name is 30 characters.
- DEVType=DTF (Required)
- Specifies that the DTF tape devices are assigned to this device
class.
- FORMAT
- Specifies the recording format to be used when writing data to sequential
access media. This parameter is optional; the default value is
DRIVE.
These are the possible values for DTF devices:
- DRIVE
- Specifies that TSM selects the highest format that can be supported by the
sequential access drive on which a volume is mounted.
Attention: Avoid specifying the DRIVE value when a mixture of
devices is used within the same library. For example, if you have
drives that support recording formats superior to other drives in a library,
do not specify the FORMAT=DRIVE option.
- DTF
- Specifies that TSM writes data to a DTF drive using the DTF recording
format. This results in a tape capacity of approximately 12GB with the
CY-9000 GW-240 and 42GB with the CY-9000 GW-730L tape cassette.
- LIBRary
- Specifies the name of the defined library object that contains the DLT
tape drives used by this device class. For information about defining a
library object, see the DEFINE LIBRARY command.
- MOUNTRetention
- Specifies the number of minutes to retain an idle sequential access volume
before dismounting it. This parameter is optional. The default
value is 60. You can specify a number from 0 to 9999.
This parameter can improve response time for sequential access media mounts
by leaving previously mounted volumes online. However, for EXTERNAL
library types (that is, a library managed by an external media management
system), set this parameter to a low value (for example, two minutes) to
enhance device sharing between applications.
- PREFIX
- Specifies the high level qualifier of the data set name that the server
writes into the sequential access media labels. For each sequential
access volume assigned to this device class, TSM uses this prefix to create
the data set name. This parameter is optional. The default value
is ADSM. The maximum length of this prefix is 8 characters.
If you have already established a media label naming convention that
supports your current management system, use a volume prefix that conforms to
your naming conventions. Values specified for this parameter must meet
the following conditions:
- The value is to be made up of qualifiers, which can contain up to 8
characters (including periods). For example, the following value would
be acceptable:
AB.CD2.E
- The qualifiers must be separated by a single period.
- The first letter of each qualifier must be alphabetical or national
(@,#,$), followed by alphabetical, national, hyphen, or numeric
characters.
An example of a tape volume data set name using the default prefix (with
the TSM qualifier added) is ADSM.BFS.
- ESTCAPacity
- Specifies the estimated capacity for the sequential access volumes
categorized by this device class. This parameter is optional.
You can specify this parameter if the default estimated capacity for the
device class is inaccurate due to compression of data.
You must specify this value as an integer followed by K
(Kilobytes), M (Megabytes), or G (Gigabytes).
For example, ESTCAPACITY=5M specifies that the estimated capacity for a
volume in this device class is 5 megabytes. The smallest value allowed
is 100KB (that is, ESTCAPACITY=100K).
- MOUNTWait
- Specifies the maximum number of minutes to wait for a sequential access
volume to be mounted in a manual library. This parameter is optional
and does not apply to automated libraries. If the mount request is not
satisfied within the specified amount of time, the mount request is
canceled. The default value is 60 minutes. You can specify a
number from 0 to 9999.
- MOUNTLimit
- Specifies the maximum number of sequential access volumes that can be
simultaneously mounted for the device class. This parameter is
optional. The default is DRIVES. You can specify a number from 0
to 256.
Note: | For EXTERNAL library types, do not use the DRIVES default for the MOUNTLIMIT
value. Specify the number of drives for the library as the MOUNTLIMIT
value.
|
The following are possible values:
- DRIVES
- Specifies that every time a mount point is allocated, the number of drives
defined to the library is used to calculate the true mountlimit value
(including online status).
- mountlimitvalue
- Specifies the maximum number of drives used concurrently in this device
class by TSM. This value must never be allowed to exceed the number of
drives that are defined and online in the library that services this device
class.
- 0 (zero)
- Specifies that no new transactions can gain access to the storage
pool.
Privilege Class
To issue this command, you must have system privilege or unrestricted
storage privilege.
Syntax
>>-DEFine DEVclass--device_class_name----DEVType--=--QIC-------->
.-FORMAT--=--DRIVE--------.
>-----+-------------------------+--LIBRary--=--library_name----->
'-FORMAT--=--+-DRIVE----+-'
+-QIC120---+
+-QIC150---+
+-QIC525---+
+-QIC1000--+
+-QIC2GB---+
+-QIC2GBC--+
+-QIC5010--+
+-QIC5010C-+
+-QIC4GB---+
+-QIC4GBC--+
+-QIC12GB--+
+-QIC12GBC-+
+-QIC25GB--+
'-QIC25GBC-'
.-MOUNTRetention--=--60-------.
>-----+-----------------------------+--------------------------->
'-MOUNTRetention--=--minutes--'
.-PREFIX--=--ADSM--------------.
>-----+------------------------------+-------------------------->
'-PREFIX--=--+-ADSM----------+-'
'-tapevolprefix-'
.-MOUNTWait--=--60-------.
>-----+-----------------------+---+------------------------+---->
'-ESTCAPacity--=--size--' '-MOUNTWait--=--minutes--'
.-MOUNTLimit--=--DRIVES--------------.
>-----+------------------------------------+-------------------><
'-MOUNTLimit--=--+-DRIVES----------+-'
+-mountlimitvalue-+
'-0---------------'
Parameters
- device_class_name (Required)
- Specifies the name of the device class to be defined. The maximum
length of the device class name is 30 characters.
- DEVType=QIC (Required)
- Specifies that the QIC device type is assigned to the device class.
QIC indicates that quarter-inch cartridge tape devices are assigned to this
device class.
- FORMAT
- Specifies the recording format to be used when writing data to sequential
access media. This parameter is optional; the default value is
DRIVE.
The following are possible values for QIC devices:
- DRIVE
- Specifies that TSM selects the highest format that can be supported by the
sequential access drive on which a volume is mounted.
Attention: Avoid specifying the DRIVE value when a mixture of
devices is used within the same library. For example, if you have
drives that support recording formats superior to other drives in a library,
do not specify the FORMAT=DRIVE option.
- QIC120, QIC150, QIC525, QIC1000
- See Table 52.
- QIC2GB
- Specifies that TSM writes data that uses the 2000 quarter-inch recording
format. This format results in a cartridge capacity of 2GB.
- QIC2GBC
- Specifies that TSM writes data that uses the 2000 quarter-inch recording
format. This format results in a cartridge capacity of approximately
2GB.
- QIC4GB
- Specifies that TSM writes data that uses the 4000 quarter-inch recording
format. This format results in a cartridge capacity of 4GB.
- QIC4GBC
- Specifies that TSM writes data that uses the 4000 quarter-inch recording
format. This format results in a cartridge capacity of approximately
8GB.
- QIC12GB
- Specifies that TSM writes data that uses the 12000 recording
format. This format results in a cartridge capacity of 12GB on
343-meter tape.
- QIC12GBC
- Specifies that TSM writes data that uses the 12000 recording
format. This format results in a cartridge capacity of approximately
24GB on 343-meter tape. This format uses the tape drive hardware
compression feature, so the actual capacity may be more than 24GB.
- QIC5010
- Specifies that TSM writes data that uses the 5010 recording format.
This format results in a cartridge capacity of 13 to 16GB.
- QIC5010C
- Specifies that TSM writes data that uses the 5010C recording
format. This format results in a cartridge capacity of approximately 26
to 32GB.
- QIC25GB
- Specifies that TSM writes data that uses the 25000 recording
format. This format results in a cartridge capacity of 25GB.
- QIC25GBC
- Specifies that TSM writes data that uses the 25000 recording
format. This format results in a cartridge capacity of approximately
50GB.
Table 52. QIC Tape Recording Format Selections
Tape/Format
|
QIC-120
|
QIC-150
|
QIC-525
|
QIC-1000
|
|
3M DC300XLP
3M DC600A
3M DC600XTD
3M DC6150
3M DC6320
3M DC6525
3M DC9100
3M DC9120XL
|
-
Read
Read/Write
Read/Write
Read/Write
Read/Write
-
-
|
-
-
Read/Write
Read/Write
Read/Write
Read/Write
-
-
|
-
-
-
-
Read/Write
Read/Write
-
-
|
-
-
-
-
-
-
Read/Write
Read/Write
|
-
-
-
-
-
-
Read/Write
Read/Write
|
Note: | TSM cannot use 3M DC300XLP and 3M DC600A tapes.
|
|
- LIBRary
- Specifies the name of the defined library object that contains the QIC
tape drives that can be used by this device class. For information
about defining a library object, see the DEFINE LIBRARY command.
- MOUNTRetention
- Specifies the number of minutes to retain an idle sequential access volume
before dismounting it. This parameter is optional. The default
value is 60. You can specify a number from 0 to 9999.
This parameter can improve response time for sequential access media mounts
by leaving previously mounted volumes online. However, for EXTERNAL
library types (that is, a library managed by an external media management
system), set this parameter to a low value (for example, two minutes) to
enhance device sharing between applications.
- PREFIX
- Specifies the high level qualifier of the file name that the server writes
into the sequential access media labels. For each sequential access
volume assigned to this device class, TSM uses this prefix to create the data
set name. This parameter is optional. The default value is
ADSM. The maximum length of this prefix is 8 characters.
If you have already established a media label naming convention that
supports your current management system, use a volume prefix that conforms to
your naming conventions.
Values specified for this parameter must meet the following
conditions:
- The value is to be made up of qualifiers, which can contain up to 8
characters (including periods). For example, the following value would
be acceptable:
AB.CD2.E
- The qualifiers must be separated by a single period.
- The first letter of each qualifier must be alphabetical or national
(@,#,$), followed by alphabetical, national, hyphen, or numeric
characters.
An example of a tape volume data set name using the default prefix (with
the TSM qualifier added) is ADSM.BFS.
- ESTCAPacity
- Specifies the estimated capacity for the sequential access volumes
categorized by this device class. This parameter is optional.
You can specify this parameter if the default estimated capacity for the
device class is inaccurate due to compression of data.
For example, ESTCAPACITY=5M specifies that the estimated capacity for a
volume in this device class is 5 megabytes. The smallest value allowed
is 100KB (that is, ESTCAPACITY=100K).
For more information on the default estimated capacity for QIC tapes, see Table 53.
Table 53. TSM Default Estimated Capacity for QIC Tape
Tape Format
| Estimated Capacity (range)
|
QIC120
| 26MB-172MB
|
QIC150
| 31MB-207MB
|
QIC525
| 65MB-427MB
|
QIC1000
| 169MB-1.1GB
|
QIC2GB
| 2.0GB
|
QIC2GBC
| 2.0GB-4.0GB
|
QIC4GB
| 4.0GB
|
QIC4GBC
| 4.0GB-8.0GB
|
QIC12GB
| 12.0GB
|
QIC12GBC
| 12.0GB-24.0GB
|
QIC5010
| 13.0GB-16.0GB (depends on media)
|
QIC5010C
| 26.0GB-32.0GB (depends on media)
|
QIC25GB
| 25.0GB
|
QIC25GBC
| 25.0GB-50.0GB
|
- MOUNTWait
- Specifies the maximum number of minutes to wait for a sequential access
volume to be mounted in a manual library. This parameter is optional
and does not apply to automated libraries. If the mount request is not
satisfied within the specified amount of time, the mount request is
canceled. The default value is 60 minutes. You can specify a
number from 0 to 9999.
- MOUNTLimit
- Specifies the maximum number of sequential access volumes that can be
simultaneously mounted for the device class. This parameter is
optional. The default is DRIVES. You can specify a number from 0
to 256.
Note: | For EXTERNAL library types, do not use the DRIVES default for the MOUNTLIMIT
value. Specify the number of drives for the library as the MOUNTLIMIT
value.
|
The following are possible values:
- DRIVES
- Specifies that every time a mount point is allocated, the number of drives
defined to the library is used to calculate the true mountlimit value
(including online status).
- mountlimitvalue
- Specifies the maximum number of drives used concurrently in this device
class by TSM. This value must never be allowed to exceed the number of
drives that are defined and online in the library that services this device
class.
- 0 (zero)
- Specifies that no new transactions can gain access to the storage
pool.
Privilege Class
To issue this command, you must have system privilege or unrestricted
storage privilege.
Syntax
>>-DEFine DEVclass--device_class_name----DEVType--=--3590------->
.-FORMAT--=--DRIVE-------.
>-----+------------------------+--LIBRary--=--library_name------>
'-FORMAT--=--+-DRIVE---+-'
+-3590B---+
+-3590C---+
+-3590E-B-+
'-3590E-C-'
.-MOUNTRetention--=--60-------.
>-----+-----------------------------+--------------------------->
'-MOUNTRetention--=--minutes--'
.-PREFIX--=--ADSM--------------.
>-----+------------------------------+-------------------------->
'-PREFIX--=--+-ADSM----------+-'
'-tapevolprefix-'
.-MOUNTWait--=--60-------.
>-----+-----------------------+---+------------------------+---><
'-ESTCAPacity--=--size--' '-MOUNTWait--=--minutes--'
Parameters
- device_class_name (Required)
- Specifies the name of the device class to be defined. The maximum
length of the device class name is 30 characters.
- DEVType=3590 (Required)
- Specifies the 3590 device type is assigned to the device class.
3590 indicates that IBM 3590 cartridge tape devices are assigned to this
device class.
- FORMAT
- Specifies the recording format to be used when writing data to sequential
access media. This parameter is optional; the default value is
DRIVE.
The following are possible values for 3590 devices:
- DRIVE
- Specifies that TSM selects the highest format that can be supported by the
sequential access drive on which a volume is mounted.
- 3590B
- Specifies that TSM writes data using the basic (uncompressed)
format. This results in a tape capacity of approximately 10GB.
- 3590C
- Specifies that TSM writes data using the compressed format. This
results in a tape capacity of approximately 10GB. However, this format
uses the tape drive's hardware compression feature so the actual capacity
may be greater depending on the effectiveness of compression.
- 3590E-B
- Specifies that TSM writes data by using the uncompressed format similar to
the 3590B format. This results in a tape capacity of approximately
10GB.
- 3590E-C
- Specifies that TSM writes data by using the compressed format similar to
the 3590C format. This results in a tape capacity of approximately
10GB. However, this format uses the tape drive's hardware
compression feature so the actual capacity may be greater depending on the
effectiveness of compression.
- LIBRary
- Specifies the name of the defined library object that contains the tape
drives that can be used by this device class. For information about
defining a library object, see the DEFINE LIBRARY command.
- MOUNTRetention
- Specifies the amount of time, in minutes, to retain an idle sequential
access volume before dismounting it. This parameter is optional.
The default value is 60. You can specify a number from 0 to
9999.
This parameter can improve response time for sequential access media mounts
by leaving previouslyvolumes online. However, for EXTERNAL library
types, setting this parameter to a low value (for example, two minutes)
enhances device sharing between applications.
- PREFIX
- Specifies the high level qualifier of the data set name that the server
writes into the sequential access media labels. For each sequential
access volume assigned to this device class, TSM uses this prefix to create
the data set name. This parameter is optional. The default value
is ADSM. The maximum length of this prefix is 8 characters.
If you have already established a media label naming convention that
supports your current management system, use a volume prefix that conforms to
your naming conventions.
Values specified for this parameter must meet the following
conditions:
- The value is to be made up of qualifiers, which can contain up to 8
characters (including periods). For example, the following value would
be acceptable:
AB.CD2.E
- The qualifiers must be separated by a single period.
- The first letter of each qualifier must be alphabetical or national
(@,#,$), followed by alphabetical, national, hyphen, or numeric
characters.
An example of a tape volume data set name using the default prefix (with
the TSM qualifier added) is ADSM.BFS.
- ESTCAPacity
- Specifies the estimated capacity for the sequential access volumes
categorized by this device class. This parameter is optional.
You can specify this parameter if the default estimated capacity for the
device class is inaccurate due to compression of data.
You must specify this value as an integer followed by K
(Kilobytes), M (Megabytes), or G (Gigabytes).
For example, ESTCAPACITY=5M specifies that the estimated capacity for a
volume in this device class is 5 megabytes. The smallest value allowed
is 100KB (that is, ESTCAPACITY=100K).
Table 54. TSM Estimated Capacity for Cartridge Tape
Tape Format
| Estimated Capacity
|
3590B
| 10GB
|
3590C
| 10GB (see note)
|
3590E-B
| 10GB
|
3590E-C
| 10GB (see note)
|
Note: | This format uses the tape drive hardware compression feature.
Depending on the effectiveness of compression, the actual capacity may be
greater than the listed value.
|
|
- MOUNTWait
- Specifies the maximum number of minutes to wait for a sequential access
volume to be mounted in a manual library. This parameter is optional
and does not apply to automated libraries. If the mount request is not
satisfied within the specified amount of time, the mount request is
canceled. The default value is 60 minutes. You can specify a
number from 0 to 9999.
Privilege Class
To issue this command, you must have system privilege or unrestricted
storage privilege.
Syntax
>>-DEFine DEVclass--device_class_name----DEVType--=--3570------->
.-FORMAT--=--DRIVE-----.
>-----+----------------------+--LIBRary--=--library_name-------->
'-FORMAT--=--+-DRIVE-+-'
+-3570B-+
'-3570C-'
.-MOUNTRetention--=--60-------.
>-----+-----------------------------+--------------------------->
'-MOUNTRetention--=--minutes--'
.-PREFIX--=--ADSM--------------.
>-----+------------------------------+-------------------------->
'-PREFIX--=--+-ADSM----------+-'
'-tapevolprefix-'
.-MOUNTWait--=--60-------.
>-----+-----------------------+---+------------------------+---->
'-ESTCAPacity--=--size--' '-MOUNTWait--=--minutes--'
.-MOUNTLimit--=--DRIVES--------------.
>-----+------------------------------------+-------------------><
'-MOUNTLimit--=--+-DRIVES----------+-'
+-mountlimitvalue-+
'-0---------------'
Parameters
- device_class_name (Required)
- Specifies the name of the device class to be defined. The maximum
length of the device class name is 30 characters.
- DEVType=3570 (Required)
- Specifies the 3570 device type is assigned to the device class. The
3570 indicates that IBM 3570 cartridge tape devices are assigned to this
device class.
- FORMAT
- Specifies the recording format to be used when writing data to sequential
access media. This parameter is optional; the default value is
DRIVE.
The following are possible values for 3570 devices:
- DRIVE
- Specifies that TSM selects the highest format that can be supported by the
sequential access drive on which a volume is mounted.
- 3570B
- Specifies that TSM writes data that uses the basic (uncompressed)
format. This results in a tape capacity of approximately 5GB.
- 3570C
- Specifies that TSM writes data that uses the compressed format.
This results in a tape capacity of approximately 5GB. However, this
format uses the tape drive's hardware compression feature so the actual
capacity may be greater depending on the effectiveness of compression.
- LIBRary
- Specifies the name of the defined library object that contains the tape
drives that can be used by this device class. For information about
defining a library object, see the DEFINE LIBRARY command.
- MOUNTRetention
- Specifies the amount of time, in minutes, to retain an idle sequential
access volume before dismounting it. This parameter is optional.
The default value is 60. You can specify a number from 0 to
9999.
This parameter can improve response time for sequential access media mounts
by leaving previously mounted volumes online. However, for EXTERNAL
library types, setting this parameter to a low value (for example, two
minutes) enhances device sharing between applications.
- PREFIX
- Specifies the high level qualifier of the data set name that the server
writes into the sequential access media labels. For each sequential
access volume assigned to this device class, TSM uses this prefix to create
the data set name. This parameter is optional. The default value
is ADSM. The maximum length of this prefix is 8 characters.
If you have already established a media label naming convention that
supports your current management system, use a volume prefix that conforms to
your naming conventions.
Values specified for this parameter must meet the following
conditions:
- The value is to be made up of qualifiers, which can contain up to 8
characters (including periods). For example, the following value would
be acceptable:
AB.CD2.E
- The qualifiers must be separated by a single period.
- The first letter of each qualifier must be alphabetical or national
(@,#,$), followed by alphabetical, national, hyphen, or numeric
characters.
An example of a tape volume data set name using the default prefix (with
the TSM qualifier added) is ADSM.BFS.
- ESTCAPacity
- Specifies the estimated capacity for the sequential access volumes
categorized by this device class. This parameter is optional.
You can specify this parameter if the default estimated capacity for the
device class is inaccurate due to compression of data. You must specify
this value as an integer followed by K (Kilobytes), M
(Megabytes), or G (Gigabytes).
For example, ESTCAPACITY=5M specifies that the estimated capacity for a
volume in this device class is 5 megabytes. The smallest value allowed
is 100KB (that is, ESTCAPACITY=100K).
For more information on the default estimated capacity for 3570 cartridge
tapes, see Table 55.
Table 55. TSM Estimated Capacity for Cartridge Tape
Tape Format
| Estimated Capacity
|
3570B
| 5GB
|
3570C
| 5GB (see note)
|
Note: | This format uses the tape drive hardware compression feature.
Depending on the effectiveness of compression, the actual capacity may be
greater than the listed value.
|
|
- MOUNTWait
- Specifies the maximum number of minutes to wait for a sequential access
volume to be mounted in a manual library. This parameter is optional
and does not apply to automated libraries. If the mount request is not
satisfied within the specified amount of time, the mount request is
canceled. The default value is 60 minutes. You can specify a
number from 0 to 9999.
- MOUNTLimit
- Specifies the maximum number of sequential access volumes that can be
simultaneously mounted for the device class. This parameter is
optional. The default is DRIVES. You can specify a number from 0
to 256.
Note: | For EXTERNAL library types, do not use the DRIVES default for the MOUNTLIMIT
value. Specify the number of drives for the library as the MOUNTLIMIT
value.
|
The following are possible values:
- DRIVES
- Specifies that every time a mount point is allocated, the number of drives
defined to the library is used to calculate the true mountlimit value
(including online status).
- mountlimitvalue
- Specifies the maximum number of drives used concurrently in this device
class by TSM. This value must never be allowed to exceed the number of
drives that are defined and online in the library that services this device
class.
- 0 (zero)
- Specifies that no new transactions can gain access to the storage
pool.
Privilege Class
To issue this command, you must have system privilege or unrestricted
storage privilege.
Syntax
>>-DEFine DEVclass---device_class_name-------------------------->
>-----DEVType--=--GENERICTAPE---LIBRary--=--library_name-------->
.-MOUNTRetention--=--60-------.
>-----+-----------------------------+--------------------------->
'-MOUNTRetention--=--minutes--'
.-MOUNTWait--=--60-------.
>-----+-----------------------+---+------------------------+---->
'-ESTCAPacity--=--size--' '-MOUNTWait--=--minutes--'
.-MOUNTLimit--=--DRIVES--------------.
>-----+------------------------------------+-------------------><
'-MOUNTLimit--=--+-DRIVES----------+-'
+-mountlimitvalue-+
'-0---------------'
When using this device type, the server does not recognize either the type
of device or the cartridge recording format. Because the server does
not recognize the type of device, if an I/O error occurs, error information is
less detailed compared to error information for a specific device type (for
example, 8mm). When defining devices to the server, do not mix various
types of devices within the same device type.
Parameters
- device_class_name (Required)
- Specifies the name of the device class to be defined. The maximum
length of the device class name is 30 characters.
- DEVType=GENERICTAPE (Required)
- Specifies that the GENERICTAPE device type is assigned to the device
class. GENERICTAPE indicates that the volumes for this device class are
used in tape drives supported by the operating system's tape device
driver.
The server recognizes that the media can be removed and that additional
media can be inserted, subject to limits set with the MOUNTLIMIT parameter for
the device class and the MAXSCRATCH parameter for the storage pool.
Volumes in a device class with device type GENERICTAPE are sequential
access volumes.
- LIBRary
- Specifies the name of the defined library object that contains the tape
drives used by this device class. For information about defining a
library object, see the DEFINE LIBRARY command.
- MOUNTRetention
- Specifies the amount of time, in minutes, to retain an idle sequential
access volume before dismounting it. This parameter is optional.
The default value is 60. You can specify a number from 0 to
9999.
This parameter can improve response time for sequential access media mounts
by leaving previously mounted volumes online.
- ESTCAPacity
- Specifies the estimated capacity for the sequential access volumes
categorized by this device class. This parameter is optional.
You must specify this value as an integer followed by K
(Kilobytes), M (Megabytes), or G (Gigabytes).
For example, ESTCAPACITY=5M specifies that the estimated capacity for a
volume in this device class is 5 megabytes. The smallest value allowed
is 100KB (that is, ESTCAPACITY=100K).
Specify a capacity appropriate to the particular tape drive being
used.
- MOUNTWait
- Specifies the maximum number of minutes to wait for a sequential access
volume to be mounted in a manual library. This parameter is optional
and does not apply to automated libraries. If the mount request is not
satisfied within the specified amount of time, the mount request is
canceled. The default value is 60 minutes. You can specify a
number from 0 to 9999.
- MOUNTLimit
- Specifies the maximum number of sequential access volumes that can be
simultaneously mounted for the device class. This parameter is
optional. The default is DRIVES. You can specify a number from 0
to 256.
Note: | For EXTERNAL library types, do not use the DRIVES default for the MOUNTLIMIT
value. Specify the number of drives for the library as the MOUNTLIMIT
value.
|
The following are possible values:
- DRIVES
- Specifies that every time a mount point is allocated, the number of drives
defined to the library is used to calculate the true mountlimit value
(including online status).
- mountlimitvalue
- Specifies the maximum number of drives used concurrently in this device
class by TSM. This value must never be allowed to exceed the number of
drives that are defined and online in the library that services this device
class.
- 0 (zero)
- Specifies that no new transactions can gain access to the storage
pool.
Privilege Class
To issue this command, you must have system privilege or unrestricted
storage privilege.
Syntax
>>-DEFine DEVclass--device_class_name--------------------------->
>-----DEVType--=--+-OPTical------+------------------------------>
+-WORM---------+
| (1) |
+-WORM12-------+
| (1) |
'-WORM14-------'
.-FORMAT--=--DRIVE-------------.
>-----+------------------------------+-------------------------->
'-FORMAT--=--+-DRIVE---------+-'
| (2) |
+-650MB---------+
| (2) |
+-1300MB--------+
| (2) |
+-2600MB--------+
| (2) |
+-5200MB--------+
| (3) |
+-5600MB--------+
| (4) |
+-10200MB-------+
| (3) |
+-12000MB-------+
| (4) |
'-14800MB-------'
>----LIBRary--=--library_name----------------------------------->
.-MOUNTRetention--=--60-------.
>-----+-----------------------------+--------------------------->
'-MOUNTRetention--=--minutes--'
.-MOUNTWait--=--60-------.
>-----+-----------------------+---+------------------------+---->
'-ESTCAPacity--=--size--' '-MOUNTWait--=--minutes--'
.-MOUNTLimit--=--DRIVES--------------.
>-----+------------------------------------+-------------------><
'-MOUNTLimit--=--+-DRIVES----------+-'
+-mountlimitvalue-+
'-0---------------'
Notes:
- The WORM12 or WORM14 device type is only valid on AIX 4.1.4
or subsequent systems.
- This value is not valid for WORM12 device types.
- This value is only valid for WORM12 device types.
- This value is only valid for WORM14 device types.
Parameters
- device_class_name (Required)
- Specifies the name of the device class to be defined. The maximum
length of the device class name is 30 characters.
- DEVType (Required)
- Specifies that the OPTICAL and WORM, WORM12, WORM14 device types are
assigned to the device class.
Possible values are:
- OPTical
- Specifies that the device class uses two-sided 5.25 inch rewritable
optical media.
- WORM
- Specifies that the device class uses two-sided 5.25 inch write-once
read-many (WORM) optical media.
- WORM12
- Specifies that the device class uses two-sided 12-inch WORM optical
media. The WORM12 device type is only valid on AIX 4.1.4
or subsequent systems.
- WORM14
- Specifies that the device class uses two-sided 14-inch WORM optical
media. The WORM14 device type is only valid on AIX 4.1.4
or subsequent systems.
- FORMAT
- Specifies the recording format to be used when writing data to sequential
access media. This parameter is optional; the default value is
DRIVE.
Possible values are:
- DRIVE
- Specifies that TSM selects the highest format that can be supported by the
sequential access drive on which a volume is mounted.
Attention: Avoid specifying the DRIVE value when a mixture of
devices is used within the same library. For example, if you have
drives that support recording formats superior to other drives in a library,
do not specify the FORMAT=DRIVE option.
- 650MB
- Specifies that TSM writes data to a 650 MB 5.25-inch optical
drive. This value is not valid for WORM12 or 14 device types.
- 1300MB
- Specifies that TSM writes data to a 1300 MB 5.25-inch optical
drive.This value is not valid for WORM12 or 14 device types.
- 2600MB
- Specifies that TSM writes data to a 2600 MB 5.25-inch optical
drive. This value is not valid for WORM12 or 14 device types.
- 5200MB
- Specifies that TSM writes data to a 5200 MB 5.25-inch optical
drive. This value is not valid for WORM12 or 14 device types.
- 5600MB
- Specifies that TSM writes data to a 5600 MB 12-inch optical drive.
This value is only valid for WORM12 device types.
- 10200MB
- Specifies that TSM writes data to a 10200 MB 14-inch optical drive.
This value is only valid for WORM14 device types.
- 12000MB
- Specifies that TSM writes data to a 12000 MB 12-inch optical drive.
This value is only valid for WORM12 device types.
- 14800MB
- Specifies that TSM writes data to a 14800 MB 14-inch optical drive.
This value is only valid for WORM14 device types.
- LIBRary
- Specifies the name of the defined library object that contains the optical
drives used by this device class. For information about defining a
library object, see the DEFINE LIBRARY command.
- MOUNTRetention
- Specifies the amount of time, in minutes, to retain an idle sequential
access volume before dismounting it. This parameter is optional.
The default value is 60. You can specify a number from 0 to
9999.
This parameter can improve response time for sequential access media mounts
by leaving previously mounted volumes online.
- ESTCAPacity
- Specifies the estimated capacity for the sequential access volumes
categorized by this device class. This parameter is optional.
You can specify this parameter if the default estimated capacity for the
device class is inaccurate due to compression of data.
You must specify this value as an integer followed by K
(Kilobytes), M (Megabytes), or G (Gigabytes).
For example, ESTCAPACITY=5M specifies that the estimated capacity for a
volume in this device class is 5 megabytes. The smallest value allowed
is 100KB (that is, ESTCAPACITY=100K).
- MOUNTWait
- Specifies the maximum number of minutes to wait for a sequential access
volume to be mounted in a manual library. This parameter is optional
and does not apply to automated libraries. If the mount request is not
satisfied within the specified amount of time, the mount request is
canceled. The default value is 60 minutes. You can specify a
number from 0 to 9999.
- MOUNTLimit
- Specifies the maximum number of sequential access volumes that can be
simultaneously mounted for the device class. This parameter is
optional. The default is DRIVES. You can specify a number from 0
to 256.
Note: | For EXTERNAL library types, do not use the DRIVES default for the MOUNTLIMIT
value. Specify the number of drives for the library as the MOUNTLIMIT
value.
|
The following are possible values:
- DRIVES
- Specifies that every time a mount point is allocated, the number of drives
defined to the library is used to calculate the true mountlimit value
(including online status).
- mountlimitvalue
- Specifies the maximum number of drives used concurrently in this device
class by TSM. This value must never be allowed to exceed the number of
drives that are defined and online in the library that services this device
class.
- 0 (zero)
- Specifies that no new transactions can gain access to the storage
pool.
Privilege Class
To issue this command, you must have system privilege or unrestricted
storage privilege.
Syntax
>>-DEFine DEVclass---device_class_name-------------------------->
>-----DEVType--=--REMOVABLEfile---LIBRary--=--library_name------>
.-MOUNTRetention--=--60-------.
>-----+-----------------------------+--------------------------->
'-MOUNTRetention--=--minutes--'
.-MAXCAPacity--=--spaceremaining--.
>-----+---------------------------------+----------------------->
'-MAXCAPacity--=--maxcap----------'
.-MOUNTWait--=--60-------. .-TWOSided--=--No------.
>-----+------------------------+---+----------------------+----->
'-MOUNTWait--=--minutes--' '-TWOSided--=--+-No--+-'
'-Yes-'
.-MOUNTLimit--=--DRIVES--------------.
>-----+------------------------------------+-------------------><
'-MOUNTLimit--=--+-DRIVES----------+-'
+-mountlimitvalue-+
'-0---------------'
Parameters
- device_class_name (Required)
- Specifies the name of the device class to be defined. The maximum
length of the device class name is 30 characters.
- DEVType=REMOVABLEfile (Required)
- Specifies that the REMOVABLEFILE device type is assigned to the device
class. REMOVABLEFILE indicates that the volumes for this device class
are files on local, removable media. Common drives for this device type
include Iomega Zip and Jaz drives, and SyQuest drives. To access
volumes that belong to this device class, the server requests that the
removable media be mounted in drives. The server then opens a file on
the media and reads or writes file data. Removable file drives are
treated as single sided. Two-sided media are treated as two separate
volumes.
The server recognizes that the media can be removed and that additional
media can be inserted, subject to limits set with the MOUNTLIMIT parameter for
the device class and the MAXSCRATCH parameter for the storage pool.
Volumes in a device class with device type REMOVABLEFILE are sequential
access volumes.
You can use CD-ROM media for the REMOVABLEFILE device type. The library
type must be MANUAL. You access this media through a drive letter, for
example, E:. Use the device manufacturer's utilities to
format and label the media.
The label on the media must meet the following restrictions:
- No more than 11 characters
- Same name for file name and volume label
- MAXCAPACITY parameter at less value than the capacity of the CD-ROM media
(650MB).
- LIBRary
- Specifies the name of the defined library object that contains the
removable media drives used by this device class. For information about
defining a library object, see the DEFINE LIBRARY command.
- MOUNTRetention
- Specifies the amount of time, in minutes, to retain an idle sequential
access volume before dismounting it. This parameter is optional.
The default value is 60. You can specify a number from 0 to
9999.
This parameter can improve response time for sequential access media mounts
by leaving previously mounted volumes online.
- MAXCAPacity
- Specifies the maximum size of any volumes defined to a storage pool
categorized by this device class. This parameter is optional.
You must specify this value as an integer followed by K
(Kilobytes), M (Megabytes), or G (Gigabytes).
For example, MAXCAPACITY=5M specifies that the maximum capacity for a
volume in this device class is 5 megabytes. The default maximum
capacity is the space remaining on the media after it is first used.
The smallest value allowed is 100KB (that is, MAXCAPACITY=100K).
Because the server opens only one file per physical removable medium,
specify a capacity such that the one file makes full use of your media
capacity.
- MOUNTWait
- Specifies the maximum number of minutes to wait for a sequential access
volume to be mounted in a manual library. This parameter is optional
and does not apply to automated libraries. If the mount request is not
satisfied within the specified amount of time, the mount request is
canceled. The default value is 60 minutes. You can specify a
number from 0 to 9999.
Table 56. Commands Related to DEFINE DEVCLASS
Command
| Description
|
BACKUP DEVCONFIG
| Backs up TSM device information to a file.
|
DEFINE LIBRARY
| Defines an automated or manual library.
|
DELETE DEVCLASS
| Deletes a device class name.
|
QUERY DEVCLASS
| Displays information about device classes.
|
UPDATE DEVCLASS
| Changes the attributes of a device class.
|
[ Top of Page | Previous Page | Next Page | Table of Contents | Index ]