VTL - How to enable tape caching on virtual tapes that have had tape caching disabled

Asset ID:	1-71-1022257.1
Update Date:	2011-10-03
Keywords:

Solution Type Technical Instruction Sure

Solution 1022257.1 : VTL - How to enable tape caching on virtual tapes that have had tape caching disabled

Applies to:

Sun StorageTek VTL Storage Appliance - Version: 4.0 - Build 1221 and later [Release: 4.0 and later ]
Sun StorageTek VTL Plus Storage Appliance - Version: 1.0 - Build 1323 to 2.0 - Build 1656 [Release: 1.0 to 2.0]
All Platforms
.
***Checked for relevance on 14-07-2011*** (dd-mm-yyyy)

Goal

How to re-enable or enable virtual tapes for Automated Tape Caching (ATC), if the Virtual Library has had the "Enable automated tape caching" box unchecked at some point.

Solution

Steps to Follow
To enable (or re-enable) Automated Tape Caching (ATC), the "Enable Automated Tape Caching" check box must be checked. Then the virtual tapes must be created under that Virtual Library.

To enable Automated Tape Caching policy:
1. Right-click on a Virtual Tape Library and click "Enable Automated Tape".
2. Click the "Enable Automated Tape Caching" check box.
3. Click OK.
4. Create (or if re-enabling, delete all virtual tapes then re-create) for that Virtual Tape Library.

NOTE: Disabling ATC can be done "on the fly" by:
1. Right-click on a virtual tape library and click Automated Tape Caching.
2. Clear the Enable Automated Tape Caching Policy check box.
All virtual tapes under that Virtual Library will now be changed to standard virtual tapes, and will not be automatically migrated.
3. Click OK.

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