Monitoring the space of user DASD groups

This topic describes the workspaces that report the status of user DASD groups space. This topic also describes the dialog boxes that you use to add, edit, delete, and migrate a user DASD volume group.

A user DASD group is a user-defined logical grouping of DASD volumes. Volumes within a user DASD group are typically related according to some criteria. You can define a user DASD group based on volume name, device address, SMS storage group, or one or more DASD volume attributes (for example, Fragmentation Index, Response Time, etc.). After you define a user DASD group, you can use the User DASD Group Performance and User DASD Group Space workspaces to view aggregated performance and space metrics for the group as a whole. From these two workspaces, you can drill down to other workspaces that display performance and space metrics for each volume in the group.

You can now dynamically allocate user DASD volume groups. This new feature of Tivoli OMEGAMON XE for Storage on z/OS Version 4.2.0 Interim Feature 2 replaces the functionality that was previously included in the Configuration Tool. User DASD groups are no longer defined within Configuration Tool. You access these workspaces through the User DASD Groups Space node in the Tivoli® Enterprise Portal

See Workspaces for general information on predefined workspaces and a list of all nodes that are included in the Tivoli OMEGAMON XE for Storage on z/OS product. Each node corresponds to a specific area of storage resource monitoring. And each node includes links to a unique set of storage resource workspaces. See Accessing workspaces to learn about navigating among workspaces. And see Integration with other products to learn about linking to the workspaces of other IBM Tivoli Monitoring products.

Note: User groups defined within the Configuration Tool are not visible in the Tivoli OMEGAMON XE for Storage on z/OS product unless they have been migrated. SeeMigrating user DASD group definitions for more information on how to migrate user DASD groups.

User DASD Groups Space workspace

This topic describes the main components of the principal workspace for this node.

The following sections describe various components of this workspace.

Views
This workspace provides the following views. For a description of the attributes used as column headings in the workspace table view, review the attribute group definitions for this workspace in the online help. The help resource includes attribute descriptions that are displayed when you hover with the mouse pointer over a column heading.
User DASD groups space table view

The table view contains one row of data for each user DASD group. The view contains the following information:

  • The group name
  • The number of SMS and non-SMS volumes and the total number of volumes in the group
  • The status of the VTOC index
  • The lowest freespace percent of all volumes in the group
  • The highest fragmentation index of all volumes
  • The largest free extent
  • The total free space
  • The percentage of free space for the group and the total amount of space for the entire storage group
User DASD groups with free space % < 10 bar graph
This graph contains one bar for each user DASD group with a combined free space percentage that falls below 10%.
Workspaces that are linked to this workspace
See Navigating the workspaces of the User DASD Groups Space node.

Learn how to navigate among workspaces here: Accessing workspaces. Also see Integration with other products.

See Workspaces for a list of all nodes provided in Tivoli OMEGAMON XE for Storage on z/OS.

Summary information for the workspaces in this node

This section lists the views and related attribute groups for the workspaces of the User DASD Groups Space node.

See Workspaces for general information on predefined workspaces and a list of all nodes that are included in the Tivoli OMEGAMON XE for Storage on z/OS product. Each node corresponds to a specific area of storage resource monitoring. And each node includes links to a unique set of storage resource workspaces. See Accessing workspaces to learn about navigating among workspaces. And see Integration with other products to learn about linking to the workspaces of other IBM Tivoli Monitoring products.

See User DASD Groups Space workspace for more information on the primary workspace for this node.

User DASD Groups Space workspace
View View type Attribute group
User DASD Groups Space Report TABLE Volume Group Summary
User DASD Groups with Free Space % < 10 BAR Volume Group Summary
User DASD Group Volume Space workspace
View View type Attribute group
Volume Space Report TABLE DASD Volume Space
Volumes with Free Space % < 10 BAR DASD Volume Space
Volumes with Fragmentation Index > 650 BAR DASD Volume Space
User DASD Group Space Trend workspace
View View type Attribute group
User DASD Groups Space Trend Report TABLE Volume Group Summary
Megabytes of Free Space BAR Volume Group Summary
DFSMShsm™ Status workspace
View View type Attribute group
HSM Functions Status Report TABLE HSM Function Summary
Waiting Requests BAR HSM Function Summary
HSM Control Dataset Report TABLE HSM CDS
HSM Status Report TABLE HSM Status