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September 24th, 2008 13:00

DX / Centera with Tivoli Backup

Has anyone run into any issues using Tivoli as a backup of the extended drive when the files that are being moved to Centera are 'stubbed'? Specifically, since Tivoli is supposed to recognize the extended attributes that DX places on each file (location of media, etc.), when a 'stubbed' file is backed up with Tivoli it should only backup the 'stubbed' file with those attributes intact. Doing a restore of the 'stubbed' file into the extended drive should result in the 'stubbed' file being placed back into it's original location with the extended attributes. Has anyone had problematic results?

41 Posts

September 24th, 2008 20:00

When backup software is not EA-aware, such as IBM Tivoli Storage Manager, file tags are backed up as zero byte files, and the migration information for a file is not
captured. Therefore, if you restore a zero-byte file from backup, the file is
re-migrated, and data loss can occur. To prevent this situation, you must include the full file data in each backup. Purged files must be read from media so that they can beincluded in the backup. This slows system performance and requires more disk space for the backup set.

For more information, please see the Admin Guide -- Backup and Recovery
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