# Monitoring dataset groups

This topic describes the workspaces that monitor the status of Dataset Group Summary data. You access these workspaces through the Dataset Group Summary 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.

## Navigating the workspaces of the Dataset Group Summary node

This section summarizes the workspace links that are available through the Navigator node. Depending on your monitoring goal, you follow a specific series of links to get detailed information about storage resources.

You start in the Dataset Group Summary node to navigate to the workspaces that you see in Table 1. You can view details regarding the following types of data set groups: Non-VSAM, VSAM, and GDG (generation data group). You can access the workspaces in this table using the standard path and method for navigating workspaces.

Table 1. Dataset Group Summary node: bulleted list showing the hierarchy of linked workspaces
Dataset Group Summary Dataset Group Details Primary Dataset Group Details Non-VSAM SMS Storage Class Details Dataset Performance Detail Report 1 Dataset Group Details VSAM Dataset Group VSAM Attributes Catalog Details Catalog Dataset Attributes Last Catalog Backup SMS Storage Class Details Dataset Performance Detail Report 1 Dataset Group Details GDG Dataset Group Details Non-VSAM SMS Storage Class Details Dataset Performance Detail Report 1

Footnotes for Table 1:

1. This group of workspaces is organized in the following nested pattern:
   - Dataset Performance Detail Report
     - Dataset Details
     - Dataset Performance Detail Trend

## Dataset Group Summary 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.
  Dataset group space utilization graph
    This graph displays total free space and group total used space information for each data set group.
  Dataset group summary table view
    The tabular portion covering the entire width of the workspace at the bottom of the screen displays one row of data for each defined data set group. The rows contain:
    - The data set group name
    - The total number of data sets
    - The data set with the largest allocation
    - The largest space allocation
    - The data set with the largest free space
    - The largest space free
    - The data set with the oldest referenced date within the group
    - The oldest referenced date for the identified data set within the group
    - The data set with the worst MSR within the group, and the highest MSR of the data set
    - The total used space for all of the data sets within the group
    - The total number of I/Os for all the active data sets within the group
    - The total average MSR for all the active data sets within the group
    - The data set group used space percentage
    - The total allocated space for all the data sets within the group
    - The data set group percentage of free space
    - The total free space for all the data sets within the group
Workspaces that are linked to this workspace
  See Navigating the workspaces of the Dataset Group Summary 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 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 Dataset Group Summary 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 Dataset Group Summary workspace for more information on the primary workspace for this node.

Dataset Group Summary workspace
View | View type | Attribute group
Dataset Group Summary | TABLE | Dataset Group Summary
Dataset Group Space Utilization | BAR | Dataset Group Summary

Dataset Group Details Primary workspace
View | View type | Attribute group
Total Allocations | BAR | Dataset Group Details
Response Time | BAR | Dataset Group Details
Dataset Group Primary Entries | TABLE | Dataset Group Details
I/O Activity | BAR | Dataset Group Details

Dataset Group Details VSAM workspace
View | View type | Attribute group
VSAM Cluster Report | TABLE | Dataset Group Details
Response Time | BAR | Dataset Group Details
CI/CA Splits | BAR | Dataset Group Details
Record Access | BAR | Dataset Group Details

Dataset Group Details Non-VSAM workspace
View | View type | Attribute group
Response Time | BAR | Dataset Group Details Volume
Dataset Information by Volume | TABLE | Dataset Group Details Volume
Space Utilization | BAR | Dataset Group Details Volume
Aggregate Dataset Information | TABLE | Dataset Group Details

Dataset Group Details GDG workspace
View | View type | Attribute group
Aggregate GDG Dataset Information | TABLE | Dataset Group Details
Response Time | BAR | Dataset Group Details
I/O Activity | BAR | Dataset Group Details
Total Allocations | BAR | Dataset Group Details

Dataset Group VSAM Attributes workspace
View | View type | Attribute group
Aggregate Dataset Information | TABLE | Dataset Group Details
Dataset Information by Volume | TABLE | Dataset Group Details Volume
Dataset Attributes | TABLE | Dataset Group Detail Attrs