The CA MICS STK VSM RTD Usage Summary report is created from
measurements in the Real Tape Drive Mount Activity (SVTRMR)
AND Real Tape Drive Dismount Activity (SVTRDR) files. The
report displays the usage patterns of the real tape drives by
hour. Important information in this report is the maximum
number of concurrent tape drives in use at any point in the
hour.
The report body displays the following measurements derived
by combining the RTD Mount file (SVTRMR) and RTD Dismount
file (SVTRDR).
o Minimum real tape drives allocated concurrently
o Average real tape drives allocated concurrently
o Maximum real tape drives allocated concurrently
o Number of unique real tape drive addresses used
o Number of real tape volumes mounted during the
reporting period
o Average duration a real tape drive was allocated
o Maximum duration in time a real tape drive was
allocated
o Graphic of maximum concurrent RTD usage
USAGE CONSIDERATIONS:
Number of tape drives is a fixed resource and needs to be
monitored and tracked. During production batch cycles, tape
drives need to be available for recalling needed virtual tape
volumes back to the disk buffer. Multivolume tape
maintenance can be scheduled during off-peak production batch
cycles.
To produce the report:
o Enter the CA MICS Workstation Facility (MWF)
o Choose option 2, CA MICS Information Center Facility
(MICF)
o Choose option 2, Database Inquiries
o Select TAPLSE, whose Catalog Group is PERFORM
o Complete the MICF Execution panel
o Complete the specification panel. Refer to section
3.2.2.1, StorageTek VSM MICF Inquiry Specification
Panels, for information about modifiable panel fields.
The following report sample shows the usage of the real tape
drives by hour by day for each host system using the VTSS
resource.
CA MICS STK VSM RTD Usage Summary Data Presented by Day within Month INQUIRY : TAPLSE Page 004 RUN DATE: 05NOVYY Report Start: 04FEB08:00:00 VTSS Library ID:VTSS1 Report End : 04FEB08:23:56 System ID :ALL Timespan : DETAIL ---------------------------------------------------------------------------------------------------------------------------------- Day: 04NOVYY ---------------------------RTD Occupancy Times----------Concurrent RTD Allocation----------------------------------------+ Unique RTD Total | | Minimum Average Maximum | | Addresses MVC's | | RTD's RTD's RTD's | Maximum Concurrent RTD Usage | HOUR Used Mounted | Minimum Average Maximum | Allocated Allocated Allocated | | ----- ---------- ------- -------- -------- -------- --------- --------- --------- |1---10---20---30---40---50---60---| 0 4 6 0:16:57 0:26:38 1:21:33 1 2 3 *** 2 8 14 0:22:25 0:06:04 4:42:38 2 5 7 ******* 3 7 6 0:40:21 0:59:10 1:43:49 1 2 4 **** 4 7 9 1:00:19 0:12:28 3:36:54 2 4 6 ****** 5 6 19 0:45:14 0:05:52 4:41:28 2 4 5 ***** 6 8 20 0:56:12 0:11:59 6:50:59 5 6 7 ******* 7 8 31 1:50:31 0:12:49 10:59:42 6 7 7 ******* 8 8 16 0:20:25 0:55:12 10:38:29 5 7 8 ******** 9 8 12 0:57:08 8:23:14 8:42:33 5 6 8 ******** 10 8 10 1:08:32 0:15:18 7:47:19 5 6 7 ******* 11 8 13 0:19:15 1:08:04 10:09:28 6 6 8 ******** 12 8 10 0:59:16 0:44:43 9:07:53 5 6 7 ******* 13 8 24 0:30:09 4:38:39 9:55:24 5 7 8 ******** 14 8 57 0:12:25 0:03:42 13:28:14 6 7 8 ******** 15 8 63 0:17:03 9:18:01 12:28:11 6 7 8 ******** 16 8 64 0:05:12 0:08:12 10:41:40 6 7 8 ******** 17 8 52 0:09:30 0:04:00 10:11:24 7 8 8 ******** 18 8 43 0:08:14 0:06:29 9:22:26 5 7 8 ******** 19 8 16 0:32:59 0:09:58 6:46:16 5 6 7 ******* 20 8 26 1:10:09 0:06:02 8:04:07 5 7 8 ******** 21 8 13 0:13:08 0:01:05 5:51:22 3 5 8 ******** 22 5 2 0:38:03 1:10:51 3:57:41 2 3 5 ***** 23 5 27 0:25:56 1:11:15 2:13:09 1 2 4 **** ----------------------------------------------------------------------------------------------------------------------------------
Figure 3-16. StorageTek VSM RTD Usage Summary Report
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