Monitoring logical control units
This topic describes the workspaces that monitor the status of logical control units. You access these workspaces through the Logical Control Unit 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 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.
Logical Control Unit workspace
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.
Summary information for the workspaces in this node
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.
View | View type | Attribute group |
Logical Control Unit Report | TABLE | Logical Control Unit |
Average Delay Queue | BAR | Logical Control Unit |
Average Contention Rate | BAR | Logical Control Unit |
View | View type | Attribute group |
Volume Response Time > 25 | BAR | DASD Volume Performance |
Volume Performance Report | TABLE | DASD Volume Performance |
View | View type | Attribute group |
Control Unit Percent Busy | BAR | Logical Control Unit Channel Paths |
Complex Channel Percent Busy | BAR | Logical Control Unit Channel Paths |
Director Port Percent Busy | BAR | Logical Control Unit Channel Paths |
Logical Control Unit Details | TABLE | Logical Control Unit Channel Paths |
View | View type | Attribute group |
Volume Cache Report | TABLE | Cache Devices |
Read Hit Percent < 55 | BAR | Cache Devices |
Write Hit Percent < 30 | BAR | Cache Devices |
View | View type | Attribute group |
DCM Configuration | BAR | Logical Control Unit |
DCM Channels Percent Busy | BAR | Logical Control Unit |
DCM Channels I/O per Second | BAR | Logical Control Unit |
View | View type | Attribute group |
Logical Control Unit Trend Report | TABLE | Logical Control Unit |
LCU Trend | PLOT | Logical Control Unit |
View | View type | Attribute group |
Volume Performance Report | TABLE | DASD Volume Performance |
Volume Response Time | BAR | DASD Volume Performance |
View | View type | Attribute group |
HyperPAV Report | TABLE | LCU Control Unit |
I/Os Queued - Alias Unavailable | BAR | LCU Control Unit |
Percent I/Os Queued - Alias Unavailable | BAR | LCU Control Unit |
View | View type | Attribute group |
HyperPAV Report | TABLE | LCU Control Unit |
Percent I/Os Queued - Alias Unavailable | PLOT | LCU Control Unit |