Video Screencast Help
Symantec to Separate Into Two Focused, Industry-Leading Technology Companies. Learn more.

How deduplication works on Tape?

Created: 21 Jul 2012 • Updated: 15 Aug 2012 | 5 comments
This issue has been solved. See solution.

Hi,

We just completed migrating Backup Exec 2010 to Backup Exec 2012 and it's working fine. We want to use the deduplication option, could someone tell us how deduplication works on Tape? or could you point me to the right article for deduplication?

Thanks,

Joel

Comments 5 CommentsJump to latest comment

Kiran Bandi's picture

Deduplication is possible only when you are using disk as target. When a job is configured to use deduplication storage as target, dedup occurs. Once after completing dedup job you can duplicate the deduplicated data from disk to tape. While writing to tape, that data will be rehydrated i.e will be written in it's original form not deduplicated from anymore. You can restore data from either disk or tape. You can send tapes offsite for added protection.

About the Deduplication option: http://www.symantec.com/docs/HOWTO73686

SOLUTION
AmolB's picture

Deduplication folder can be created only on Disk. There is no way to use tapes with dedup technology.

Read below articles

http://www.symantec.com/docs/HOWTO74446

http://www.symantec.com/docs/HOWTO73688

http://www.youtube.com/watch?v=aqtoPT9HvIs

Backup_Exec's picture

Hi

The only option would be to perform duplicate backup from dedup store to tape ,but then you cannot perform deduplication on tape directly.

Else above link would help you to understand more about deduplication.

Please check this link below for deduplication white paper
www.symantec.com/business/support/resources/sites/...
The above white paper is for backupexec 2010, but then it include some understanding of basic question for dedup, which you can check and moreover there is not much changes in dedup fo 2010 and dedup of 2012
Thanks

Sameer

Don't forget to give a "Thumbs Up" or Mark as "Solution" if someones advice has helped you.