The STKCDA query produces three data extracts, one with two separate views. The views show daily StorageTek Virtual Tape Storage Subsystem (VTSS) virtual tape volume mounts and concurrent use of virtual tape drives. The three data extracts display the daily use statistics at different levels of granularity and from different perspectives (VTSS views and SYSID views).
The first chart shows a VTSS level daily chart showing total Virtual Tape Volume (VTV) mounts and maximum concurrently mounted VTV drives, per hour, for all SYSIDs using the VTSSID. The example shows the statistics for VTSSID "VTSS1". Hour 3 had the most VTV mounts (455) and hour 4 had the greatest number of concurrently mounted VTV tape drives (46).
The second chart shows a SYSID level view with daily totals for each VTSSID accessed. A single vertical bar chart shows the total VTV mounts, and a horizontal line shows the maximum number of concurrently mounted VTV drives for each VTSSID. The example shows the totals for SYSID "SYA5". The use by the system of four VTSSs was evenly distributed. The greatest number of VTV mounts was on VTSSID "VTSS1" (731), and the maximum number of concurrently mounted VTV drives was 24 on VTSSID "VTSS3."
The third and fourth charts represent two separate views provided by a single data extract.
The third chart shows daily VTSS VTV mount and concurrent drive use, by hour, for each SYSID accessing the VTSS. The example shows the hourly statistics for SYSID "SYA5" use of VTSSID "VTSS1." Hour 0 had both the greatest number of VTV mounts (133) and the maximum number of concurrently mounted VTV drives (16).
The fourth chart shows a daily view of VTSS VTV mounts with each SYSID’s VTV mounts stacked using vertical bars. The example shows VTV mounts for VTSSID "VTSS1." This view shows the same VTV mount data provided in the first chart sample, but the individual SYSID contributions to total VTV mounts is provided. "SYD9" was responsible for 303 of the 455 total VTV mounts in hour 3.
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