The timing of tape refreshes is in minutes, but data only changes hourly

A known issue for tape collection data is though you have specified a interval, the new data is available only after the one-hour interval.

Issue:

You have specified a tape collection interval, but data for 3494 VTS devices changes only every hour.

Workaround:

No workaround is available. This information is extracted from SMF data written by the tape controllers. 3494 VTS controllers only write SMF records hourly. For example, you can specify a tape interval of 900 seconds (15 minutes), and a refresh operation takes place every 15 minutes. However, during a given one-hour period, only data from the previous interval is available for the refresh operation.