STK VSM VTD Mount Time Distribution (TAPPSF)
The
MICS
STK VSM VTD Mount Time Distribution report is created from the VTV Mount Activity (SVTVMR) file. The values on the X axis are the VTV mount times specified in VTSOPS by the MICS
administrator on the VTVMOUNTTIME parameter.micsrm140
The
MICS
STK VSM VTD Mount Time Distribution report is created from the VTV Mount Activity (SVTVMR) file. The values on the X axis are the VTV mount times specified in VTSOPS by the MICS
administrator on the VTVMOUNTTIME parameter.Most virtual mounts should occur very quickly, which will be obvious from the tallest bars on the left. The bars in the middle or right of the chart should appear to be very low. If they do not, that might indicate excessive recalls from real tape or tape drive contention. This might require more detailed analysis to focus in on the offending mounts.
The chart body displays the following measurements from the VTV Mount file (SVTVMR):
- Number of virtual tape mounts that were satisfied between 0 and less than half a second
- Number of virtual tape mounts that were satisfied between .5 seconds and less than 1 second
- Number of virtual tape mounts that were satisfied between 1 second and less than 2 seconds
- Number of virtual tape mounts that were satisfied between 2 seconds and less than 5 seconds
- Number of virtual tape mounts that were satisfied between 5 seconds and less than 30 seconds
- Number of virtual tape mounts that were satisfied between 30 seconds and less than 60 seconds.
- Number of virtual tape mounts that were satisfied between 1 minute and less than 2 minutes
- Number of virtual tape mounts that were satisfied in a time greater than 2 minutes
The metrics from the database used to create this chart were as follows:
- SVTVVALx - VTV Mount Time Distribution Limits
- SVTVDSTx - VTV Mount Time Distribution Counts
To produce the report:
- Enter theMICS Workstation Facility(MWF)
- Choose option 2,MICS Information Center Facility(MICF)
- Choose option 2, Database Inquiries
- Select TAPPSF, whose Catalog Group is PERFORM
- Complete the MICF Execution panel
- Complete the specification panel. For information about modifiable panel fields, see StorageTek VSM MICF Inquiry Specification Panels.
The following report sample shows the distribution of virtual tape mounts based on the time values defined in the VTVMOUNTTIME parameter set in prefix.parms(VTSOPS).
StorageTek VSM VTD Mount Time Distribution Sample
DAYS STK VSM VTD Mount Time Distribution ---------------------------------------------- System Identifier=SYS1 VTSS ID=VTSS4 ---------------------------------------------- VTV Mounts Sum 330 + ***** | ***** | ***** 300 + ***** | ***** | ***** 270 + ***** | ***** | ***** 240 + ***** | ***** | ***** 210 + ***** | ***** | ***** 180 + ***** | ***** | ***** 150 + ***** | ***** | ***** 120 + ***** | ***** | ***** 90 + ***** | ***** | ***** 60 + ***** | ***** | ***** | ***** 30 + ***** ***** | ***** ***** | ***** ***** ***** ***** ***** | ***** ***** ***** ***** ***** ***** -------------------------------------------------------------------------------------------------------- 0.5 1.0 2.0 5.0 30.0 60.0 120.0 3600.0 Mount Time Distribution in Seconds TAPPSF 18AUGyy BASED ON Data Presented by Day