Storage performance
The MainView SRM performance collector automatically updates data used in storage performance views at user-defined intervals (called snapshots). The views provide information about device activity, I/O queuing, and channels and contention by enqueue and reserves.
To access storage performance information about storage resources, you first select a resource type, such as storage groups and pools. From the resulting list of resources, you can drill down to an individual resource, such as a specific storage group. Selecting a resource produces an EZCmd menu that provides additional performance options.
The following table summarizes each performance option and its corresponding SETSRM keywords, action line commands, and EZCmd menus.
With all storage performance views, you can use the TIME command to set date and time ranges for the reporting period. For information about using the TIME command, see the Using-MainView-products or type Help TIME on the COMMAND line to access online Help.
MainView SRM retrieves start and end dates and times from the parameters that you specified in the MainView TIME command. The following guidelines apply to the TIME command:
- MainView SRM uses the end date and time for the interval date and time when you specify those parameters as *.
- If you provide hexadecimal zero start and end dates and times, MainView SRM returns all system summary records.
Storage performance options
Menu option | Description | SETSRM keywords | Action line commands | EZCmd menu |
|---|---|---|---|---|
Groups and Pools | Advances to the PRPOOL view. This view provides you with performance information about storage groups and pools. | DATE TIME TREND GRPTYPE POOL | See Group-EZMenu-EZPOOL. | EZPOOL |
Subsystems | Advances to the PRCCU view. This view displays performance information on all storage subsystems, also referred to as cache control units. | DATE TIME GRPTYPE CHP LCU PHY | D Details V Volumes H History I Daily Summary W Weekly Summary M Monthly Summary DR RAID Director PV RAID Physical Volume RF RVA SubSystem Frame RR RAID Rank | None |
Volumes | Advances to the PRVOL view.This view displays performance information on all volumes. It provides the 4-byte subsystem ID, the 11-byte physical disk ID, and other configuration information, along with I/O activity, response times, cache hit rates, and other performance data that is associated with the volume. | DATE TIME TREND GRPTYPE CCU CHP DSN LCU POOL DIR VOL | See Volume-EZMenu-EZVOL. | EZVOL |
Channel Activity | Advances to the PRCHP view. This view displays a selected channel path record. | DATE TIME TREND GRPTYPE VOL LCU | L Logical Control Unit V Volume CC Cache Control Unit D Details H History I Daily Summary W Weekly Summary M Monthly Summary | None |
System Daily Trend | Advances to the PRSSUM view. This view provides summarized historical data by system, day, week, and month. | None | D Details J Job L Logical Control Unit P Pool V Volume CC Cache Control Unit CP Channel Path DR RAID Director DS Data Sets PV RAID Physical Volume RF RVA SubSystem Frame RR RAID Rank SC Storage Class H History I Daily Summary W Weekly Summary M Monthly Summary | None |
Interval Data | Advances to the PRINTV view. This view displays all interval reports that are stored in the database. | None | J Job L Logical Control Unit P Pool V Volume CC Cache Control Unit CP Channel Path DR RAID Director DS Data Set PV RAID Physical Volume RF RVA SubSystem Frame RR RAID Rank SC Storage Class | None |
Logical Control Unit | Advances to the PRLCU view. This view displays a selected logical control unit record for a specific date and time. | DATE TIME TREND GRPTYPE CCU CHP VOL | D Details V Volume CC Cache Control Unit CP Channel Path H History I Daily Summary W Weekly Summary M Monthly Summary | None |
Storage Class | Advances to the PRSCL view. This view displays selected storage class records for specific dates and times. | DATE TIME TREND | D Details DS Data Set H History I Daily Summary W Weekly Summary M Monthly Summary | None |
Data Set | Advances to the PRDS view. This view displays data set records for specific dates and times. | DATE TIME TREND GRPTYPE JOB POOL SCL VOL | D Details J Job V Volume SC Storage Class H History I Daily Summary W Weekly Summary M Monthly Summary | None |
Job | Advances to the PRJOB view. This view displays job performance information about specific dates and times. | DATE TIME TREND GRPTYPE DSN | D Details DS Data Set H History I Daily Summary W Weekly Summary M Monthly Summary | None |
Boxes | Advances to the PRPVBOXZ view. For every box, this view displays a selected box record for a specific date and time. | DATE TIME TREND GRPTYPE CCU DIR | See Box-EZMenu-EZBOX. | EZBOX |
Physicals | Advances to the PRPVOL view. This view displays a selected physical volume record for a specific date and time. PRPVOL is logged for every physical disk. The view includes the 11-byte physical disk ID and 10-byte RAID-type description from the configuration component. | DATE TIME TREND GRPTYPE CCU DIR VOL | EZPHY | |
EMC Directors | Advances to the PRRDIR view. This view displays selected director records for specific dates and times. | DATE TIME TREND GRPTYPE CCU | D Details V Volumes PV RAID Physical Volume H History I Daily Summary W Weekly Summary M Monthly Summary | None |
RVA/STK Frames | Advances to the PRRSF view. This view displays selected RVA records for specific dates and times. | DATE TIME TREND GRPTYPE CCU VOL | See Box-EZMenu-EZBOX | EZBOX |
ESS 2105 Ranks | Advances to the PRRRK view. This view displays information about rank performance for the selected time period. | DATE TIME TREND GRPTYPE CCU VOL | EZPHY | |
PAV Volumes | Advances to the PRVOL view. This view displays selected volume records for specific dates and times. The view provides the 4-byte subsystem ID (suitable for summarization) and the 11-byte physical disk ID that is associated with the volume. | DATE TIME TREND GRPTYPE CCU CHP DSN LCU POOL DIR VOL | See Volume-EZMenu-EZVOL. | EZVOL |