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Attaching Resources |
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When you 'Attach' an SSA resource, you make the resource available to the operating system, that is change its use from 'Free' to 'System (PC)' or 'System (AIX)'.You must supply a Resource Number. This dictates the order in which the SSA resources are presented to the operating system - lowest number first. For AIX, you must Run Cfgmgr to assign a logical disk to the attached device.
Resource Number For System (PC):
Resource numbers are similar to the SCSI ID settings on SCSI disk drives. The system software uses the numbers to map the disk drives to a logical bus, target, and LUN ID.
The logical bus number to which a system resource is mapped is:
Resource number divided by 32
where 32 is the number of targets on each bus. Therefore, a resource number that is lower than 32 is in logical bus 0. The target address is the remainder that results from dividing the disk number by 32. The Logical Unit Number (LUN) is always set to 0.
For example:
Resource Number
Mapping
2
Logical Bus 0 Target 2
32
Logical Bus 1 Target 0
37
Logical Bus 1 Target 5
65
Logical Bus 2 Target 1
This page allows you to enter the resource number with which to attach the selected resource. The number is in hexadecimal format and can be any value within the range 01h to FFh. The resource number must be unique, RSM will fail to attach a resource if the resource number selected is already in use on this using system. If two resources do get attached with the same number, only one will appear in the 'System (PC)' resource list, the other will not be available to the system, and will appear in the 'System (AIX)' resource list.
The supplied default value is the next available resource
number on this using system. Care should be taken when attaching resources. If the resource
is attached with a resource number which is lower than a
resource which is already attached, drive letter assignments
may change. Care should be taken when assigning resource numbers to shared
resources, that is when running in cluster mode.
The resource number must be available on both using
systems. If the adapter card CBIOS Extension is turned on and the SSA
adapter is in a higher priority PCI slot than that of the adapter which
controls the current boot device, your operating system may fail to
boot. Turn the CBIOS Extension off during the next bootup. For compatibility with Microsoft Cluster Server (MSCS), the boot device (if it
is an SSA resource) must be on a different logical bus from any shared
disk drives.
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Actions:
This action attaches the resource to the operating system with
the assigned resource number. This resource is now available for
use by the operating system ( when it has been initialized and partitions
have been assigned as required by your operating system ). This action attaches the resource as described under the action
OK. In addition, an old MBR ( Master Boot Record ) which existed
on the resource is removed. This action aborts the attachment and returns you to the
Resource List
Attach
Delete MBR and Attach1
Cancel
Related Information
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