The STKVMA query produces two sets of daily charts. The charts show the amount of Virtual Tape Volume (VTV) mounts for each StorageTek Virtual Tape Storage Subsystem (VTSS). One chart set shows the hourly VTV mounts at the VTSSID level, and the other shows the hourly VTV mounts at the SYSID/VTSSID level. Both chart sets use vertical stacked bars to show the number of mounts satisfied in the DASD cache buffer, and the number of mounts requiring recall each hour.
The top example shows the daily summary chart for VTSSID "VTSS4." The highest number of mounts occurred during HOUR 5, with 629 mounts satisfied in cache and 5 mounts requiring recall. The highest number of mounts requiring recall was 34, and occurred during hour 15.
The bottom example shows the virtual tape activity for one of the systems, SYSID "SYI7", accessing VTSSID "VTSS4." SYSID "SYI7" accounted for 29 of 34 mounts recalling recall during hour 15.
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