1. User's Guide
  2. Understanding STA Data
  3. Understand How STA Handles Changes to the Tape Environment
  4. What Happens to Data When Drives and Media Are Removed

What Happens to Data When Drives and Media Are Removed

By default, STA hides data for drives and media that have been removed from your tape library environment. You can change the display preference to show removed resources at any time.

How Removed Drives/Media Display With "Show Removed Drives" Setting On

  • The STA Stop Tracking date indicates the date and time when STA determined the drive or media no longer exists in any of the monitored libraries.
  • Some attributes are set to "REMOVED". These include: Library Complex Name, Drive Library Name, Media Library Name, Library Model, Partition Type, Partition Name, Physical Address.

On the Drives Overview screen, you may see:

Sample drives table with REMOVED drives displayed.

On the Drives Analysis screen, you may see:

Sample pivot table with REMOVED layer displayed.

Impact of Removed Drives and Media on Calculated Totals

STA provides both current information about your tape library system and historical information collected over time.

  • Historical summaries—Rolling 30-day and daily summaries and averages are always calculated based on the number of drives and media in the system during the reporting period. The "show removed drives/media" setting has no effect on these calculations.
  • Currently Displayed Values—Totals and aggregations displayed on Overview and Analysis screens are calculated based on the number of records currently displayed. The totals will change based on the "show removed drives/media" settings.

See Also: