STK VSM RTD Mount Time Distribution (TAPPSG)

The
MICS
STK VSM RTD Mount Time Distribution report is created from the Real Tape Mount Activity (SVTRMR) file. The values on the X axis are the real tape mount times specified in VTSOPS by the
MICS
administrator on the RTDMOUNTTIME parameter.
micsrm140
The
MICS
STK VSM RTD Mount Time Distribution report is created from the Real Tape Mount Activity (SVTRMR) file. The values on the X axis are the real tape mount times specified in VTSOPS by the
MICS
administrator on the RTDMOUNTTIME parameter.
Real tape mounts take longer by nature than virtual tape mounts. The tape needs to be retrieved from a slot in the library by the robot arm. Then the tape is inserted into a drive and spun down to the point on the tape where the virtual volume is located, so it can be copied back to the disk buffer. Still, the chart will show the distribution in mount times. Depending on the values set in the RTDMOUNTTIME parameter, the bars will probably be in the middle of the chart. If any bars appear to be excessive on the right side of the chart, they might have taken a long time to satisfy. Extra reporting might be needed to determine the cause of the excessive mount times.
The chart body displays the following measurements from the RTD Mount file (SVTRMR):
  • Number of real tape mounts that were satisfied between 0 and less than 5 seconds
  • Number of real tape mounts that were satisfied between 5 seconds and less than 10 seconds
  • Number of real tape mounts that were satisfied between 10 seconds and less than 30 seconds
  • Number of real tape mounts that were satisfied between 30 seconds and less than 60 seconds
  • Number of real tape mounts that were satisfied between 1 minute and less than 2 minutes
  • Number of real tape mounts that were satisfied between 2 minutes and less than 3 minutes
  • Number of real tape mounts that were satisfied between 3 minutes and less than 4 minutes
  • Number of real tape mounts that were satisfied in a time greater than 4 minutes
The metrics from the database used to create this chart were as follows:
  • SVTRVALx - RTD Mount Time Distribution Limits
  • SVTRDSTx - RTD Mount Time Distribution Counts
To produce the report:
  1. Enter the
    MICS Workstation Facility
    (MWF)
  2. Choose option 2,
    MICS Information Center Facility
    (MICF)
  3. Choose option 2, Database Inquiries
  4. Select TAPPSG, whose Catalog Group is PERFORM
  5. Complete the MICF Execution panel
  6. 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 real tape mounts by system by day based on the time values defined in the RTDMOUNTTIME parameter set in prefix.parms(VTSOPS).

StorageTek VSM VSM RTD 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