Volume Group Summary

The Volume Group Summary attributes provide aggregate performance and aggregate space information for SMS storage groups and user DASD groups.

Busy: The percentage of time a resource is busy processing I/O requests. For PAV volumes, this value is normalized by dividing by the number of PAV exposures.

Description: This is a user-defined description used to identify an User DASD Group.

Device MPL: The highest MPL of all volumes associated with this storage group. This value is limited to those volumes that have met the minimum I/O requirements for exception processing.

Free Space Cylinders: The total amount of free space within the storage group, in cylinders. This value does not include the space on volumes in an SMS storage group that have not been converted.

Free Space GB: The total amount of free space within the storage group, in gigabytes. This value does not include the space on volumes in an SMS storage group that have not been converted.

Free Space MB: The total amount of free space within the storage group, in megabytes. This value does not include the space on volumes in an SMS storage group that have not been converted.

Free Space Percent: The free space summed across all volumes within the group, expressed as a percentage. This value does not include volumes which are unavailable for new data set allocation.

Free Space Tracks: The total amount of free space within the storage group, in tracks. This value does not include the space on volumes in an SMS storage group that have not been converted.

Group Name: SMS storage group name or OMEGAMON® User DASD Group name.

High Busy Percent: The highest percentage of time busy processing I/O requests. For PAV volumes, this value is normalized by dividing by the number of PAV exposures.

High DFW Retry Percent: The highest percentage of DFW Retries. A DASD Fast Write retry occurs when a DASD fast write operation cannot complete due to NVS (nonvolatile storage) constraints.

High Response Time: The highest MSR (millisecond response time) of any volume in the storage group.

High Volume Fragmentation Index: The value of the highest fragmentation index within the group. This value does not include volumes which are unavailable for new data set allocation.

Inactive Freespace Cylinders: Total amount of free space on inactive volumes within the storage group, in cylinders. This value is the sum of free space not available for allocation in the storage group across all volumes.

Inactive Freespace GB: Total amount of free space on inactive volumes within the storage group, in gigabytes. This value is the sum of free space not available for allocation in the storage group across all volumes.

Inactive Freespace MB: Total amount of free space on inactive volumes within the storage group, in megabytes. This value is the sum of free space not available for allocation in the storage group across all volumes.

Inactive Freespace Tracks: Total amount of free space on inactive volumes within the storage group, in tracks. This value is the sum of free space not available for allocation in the storage group across all volumes.

Integer ID: This column is used internally to process user group toolkit requests originating as a result of take action from a situation. The value does not persist across TEMS restarts. This column is not kept historically.

Largest Free Extent Cylinders: The size of the largest free extent within the storage group, in cylinders. This value does not include volumes which are unavailable for new data set allocation.

Largest Free Extent GB: The size of the largest free extent within the storage group, in gigabytes. This value does not include volumes which are unavailable for new data set allocation.

Largest Free Extent MB: The size of the largest free extent within the storage group, in megabytes. This value does not include volumes which are unavailable for new data set allocation.

Largest Free Extent Tracks: The size of the largest free extent within the storage group, in tracks. This value does not include volumes which are unavailable for new data set allocation.

Low Read Hit Percent: The lowest read hit percentage of any volume in this group. A Read Hit occurs when a read request for data is made by the processor and resolved by cache. As a result, the request does not require DASD access.

Low Volume Free Space %: The lowest free space value for a volume within the group, expressed as a percentage. This value does not include volumes which are unavailable for new data set allocation.

Low Write Hit Percent: The lowest write hit percentage of any volume in this group. This value is limited to those volumes that have met the minimum I/O requirements for exception processing.

Managed System: The SMS name of this system.

Non-SMS Volumes: The number of non-SMS volumes in this storage group.

Non-Enabled Volumes: The indicator that this group contains SMS volumes with a status other than ENABLED.

Persistence Flag: The user defined Persistence Flag for User DASD Groups only, including (0) No persist after monitoring server restart and (1) Persist after monitoring server restart.

SMS Volumes: Represents the number of SMS volumes in this storage group.

Storage Group Status: Represents the SMS storage group status for the system being monitored.

Storage Group Type: The SMS storage group type.

Time Stamp: The date and time this data was collected.

Total Space Cylinders: The total amount of space within the storage group, in cylinders. This value does not include the space on volumes in an SMS storage group that have not been converted.

Total Space GB: The total amount of space within the storage group, in gigabytes. This value does not include the space on volumes in an SMS storage group that have not been converted.

Total Space MB: The total amount of space within the storage group, in megabytes. This value does not include the space on volumes in an SMS storage group that have not been converted.

Total Space Tracks: The total amount of space within the storage group, in tracks. This value does not include the space on volumes in an SMS storage group that have not been converted.

Total Volumes: The number of volumes in this storage group.

Track Managed Free Space Cylinders: The total amount of track managed free space within the storage group, in cylinders. This value does not include the space on volumes in an SMS storage group that have not been converted.

Track Managed Free Space GB: The total amount of track managed free space within the storage group, in gigabytes. This value does not include the space on volumes in an SMS storage group that have not been converted.

Track Managed Free Space MB: The total amount of track managed free space within the storage group, in megabytes. This value does not include the space on volumes in an SMS storage group that have not been converted.

Track Managed Free Space Percent: The percent of track managed free space in the storage group. This value does not include volumes which are unavailable for new dataset allocation.

Track Managed Free Space Tracks: The total amount of track managed free space within the storage group, in tracks. This value does not include the space on volumes in an SMS storage group that have not been converted.

Track Managed High Volume Frag Index: Value of the highest track managed area fragmentation index within the group. This value does not include volumes which are unavailable for new dataset allocation.

Track Mngd Inact Freespace Cyls: Total amount of track managed free space on inactive volumes within the storage group, in cylinders. This value is the sum of free space not available for allocation in the storage group across all volumes.

Track Managed Inact Freespace GB: Total amount of track managed free space on inactive volumes within the storage group, in gigabytes. This value is the sum of free space not available for allocation in the storage group across all volumes.

Track Managed Inact Freespace MB: Total amount of track managed free space on inactive volumes within the storage group, in megabytes. This value is the sum of free space not available for allocation in the storage group across all volumes.

Track Mngd Inact Freespace Trks: Total amount of track managed free space on inactive volumes within the storage group, in tracks. This value is the sum of free space not available for allocation in the storage group across all volumes.

Track Managed Largest Free Extent Cylinders: Size of the largest free track managed area extent within the storage group, in cylinders. This value does not include volumes which are unavailable for new dataset allocation.

Track Managed Largest Free Extent GB: Size of the largest free track managed area extent within the storage group, in gigabytes. This value does not include volumes which are unavailable for new dataset allocation.

Track Managed Largest Free Extent MB: Size of the largest free track managed area extent within the storage group, in megabytes. This value does not include volumes which are unavailable for new dataset allocation.

Track Managed Largest Free Extent Tracks: Size of the largest free track managed area extent within the storage group, in tracks. This value does not include volumes which are unavailable for new dataset allocation.

Track Managed Low Volume Free Space %: Lowest track managed area free space value for a volume within the group, expressed as a percentage. This value does not include volumes which are unavailable for new dataset allocation.

Track Managed Total Space Cylinders: The total amount of track managed space within the storage group, in cylinders. This value does not include the space on volumes in an SMS storage group that have not been converted.

Track Managed Total Space GB: The total amount of track managed space within the storage group, in gigabytes. This value does not include the space on volumes in an SMS storage group that have not been converted.

Track Managed Total Space MB: The total amount of track managed space within the storage group, in megabytes. This value does not include the space on volumes in an SMS storage group that have not been converted.

Track Managed Total Space Tracks: The total amount of track managed space within the storage group, in tracks. This value does not include the space on volumes in an SMS storage group that have not been converted.

Track Managed Used Space Cylinders: The total amount of track managed used space within the storage group, in cylinders. This value does not include the space on volumes in an SMS storage group that have not been converted.

Track Managed Used Space GB: The total amount of track managed used space within the storage group, in gigabytes. This value does not include the space on volumes in an SMS storage group that have not been converted.

Track Managed Used Space MB: The total amount of track managed used space within the storage group, in megabytes. This value does not include the space on volumes in an SMS storage group that have not been converted.

Track Managed Used Space Percent: The percentage of track managed used space in the storage group or the User DASD group. This includes both the track and cylinder managed areas of the volumes.

Track Managed Used Space Tracks: The total amount of track managed used space within the storage group, in tracks. This value does not include the space on volumes in an SMS storage group that have not been converted.

User Group Name: This is a user-defined name used to identify a User DASD group.

Used Space Cylinders: The total amount of used space within the storage group, in cylinders. This value does not include the space on volumes in an SMS storage group that have not been converted.

Used Space GB: The total amount of used space within the storage group, in gigabytes. This value does not include the space on volumes in an SMS storage group that have not been converted.

Used Space MB: The total amount of used space within the storage group, in megabytes. This value does not include the space on volumes in an SMS storage group that have not been converted.

Used Space Percent: The percentage of used space in the storage group or the User DASD group. This includes both the track and cylinder managed areas of the volumes.

Used Space Tracks: The total amount of used space within the storage group, in tracks. This value does not include the space on volumes in an SMS storage group that have not been converted.

VTOC Index Status: The worst status of any VTOC index in the group.