Monitoring logical control units

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

The direct situation analysis feature is available for this workspace. The feature can help you analyze and understand a problem that is displayed in this workspace. See Directly monitoring situations.

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.

Logical control unit table view

The table view displays one row of data for each logical control unit configured in the reporting LPAR. The view contains the following information:

• The logical control unit number
• The average delay queue
• The contention rate
• The director port busy percentage
• The control unit busy percentage
• The channel path I/O rate
• The number of attached channels and whether there are DCM channels attached to the control unit
• The high volume utilization rate
• The high volume millisecond response time
• The low read hit percentage
• The low write hit percentage
• The high DFW retry percentage
• The number of SMS and non-SMS volumes
• The total number of volumes

Average delay queue bar graph

This graph contains one bar for each logical control unit. The height of the bar indicates the average number of delayed requests on the control unit header.

Average contention rate bar graph

This graph contains one bar for each logical control unit. The height of the bar indicates the contention rate for the unit.

Workspaces that are linked to this workspace

See Navigating the workspaces of the Logical Control Unit node.

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

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

This section lists the views and related attribute groups for the workspaces of the Logical Control Unit node.

See Workspaces for general information on predefined workspaces and a list of all nodes that are included in the OMEGAMON 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 Logical Control Unit workspace for more information on the primary workspace for this node.