z/OS DFSMS Using the Volume Mount Analyzer
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Example of the Usage Report (Tape Mounts)

z/OS DFSMS Using the Volume Mount Analyzer
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Figure 1 and Figure 2 show the part of the Usage Report that describes tape mount statistics.

Figure 1. The Usage Report—Tape Mounts

 7  The value for Tape Mounts per Hour is the cumulative number of mounts occurring on all tape drives during that hour.

 8  The DAILY MAXIMUM column shows the maximum number of mounts for the peak hour of that day, and the DAILY MOUNTS column is the total number of mounts for the day.

Figure 2. The Usage Report—Tape Mounts (continued)

 9  The HOURLY MAXIMUM row shows the peak number of mounts for each hour of the reporting period.

 10  This total is the maximum number of mounts for any one hour of the time period of the volume mount analyzer study. If you scan up the MAXIMUM column, you can see that the maximum (176) occurred on 6/25/91 in hour 20.

Figure 3 shows that there was a maximum of 15 drives allocated during hour 20 on 6/25/91. Dividing 176 by 15 results in an average of 11.7 mounts per drive per hour, which is approximately one mount every 5 minutes.

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