How to consolidate archived backup tapes
We have alot of archived tapes going back a couple of years that contain alot of duplicate data. Approx 500Tb on at least one hundred LTO4 tapes. I can't say for sure but I think its at least 50% duplicate files. The previous backup administrator would perform weekly full backups of our fileservers with no tape rotation (sigh).
I wanted to know if Backup Exec had options to consolidate the data.
I didn't want to use deduplication because that requires more disk space than we have available. I was also concerned that the resulting de-dup'ed data would be stored in a Symantec proprietary format.
At the moment I think what I have to do is
1. load the tapes
2. catalog the tapes
3. Identify what are the duplicate files and delete them. (not sure how to do this step)
4. consolidate the data.
I was wondering what would be the easiest way to do this? We have Backup Exec 2012 with a dual LTO6 tape library and a spare LTO4 tape library
any suggestions would be appreciated.