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Vault tapes capacity

Created: 11 Jun 2013 • Updated: 07 Sep 2013 | 5 comments
This issue has been solved. See solution.

Suddenly one site using more tapes for offsite vaulting.  Checking KB counts on "full" LTO4 media show just 500Gb on new tapes vs 800Gb or more with older tapes.  I was beginning to think we got a batch of bad tapes but find Full tapes from regular backups to new media are expected capacity where Vault tapes are not.  I know it's the hardware that signals when a tape is full so how come Vault tapes are filling up sooner?  Scratching my head on this one. 

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Dyneshia's picture

Was encryption or compression turned on via the policy ?

Will Restore's picture

Not permitted on Vault policy but I double-checked and none of the policies using encryption or compression.

Will Restore -- where there is a Will there is a way

mph999's picture

Are particular drives used for vault copies perhaps, different firmware level ??? Just an idea ...

Regards,  Martin
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Will Restore's picture

Thanks, checked & all firmware at same level.  Same drives used for regular backups & vault copies.

Will Restore -- where there is a Will there is a way

Will Restore's picture

Oh my!  Just checked library logs and it seems to think the new Sony tapes are LTO3.  sad

Very odd that regular backups capacity is fine and only vault copies are affected.

Will Restore -- where there is a Will there is a way