How to repair a Veritas tape that has been overwritten a bit?

Posted by Ismo Utriainen on Server Fault See other posts from Server Fault or by Ismo Utriainen
Published on 2009-09-17T19:59:30Z Indexed on 2010/04/20 12:44 UTC
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backup

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veritas

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tape

I meant to restore some files, but I forgot that there was a monday backup job just waiting for tape loading.

So veritas 10d started to write over my tape and that valuable data is now gone.

The original data size was about 40 GB and that accidentally started job wrote about 30 MB to the begin of tape.

What are my possibilities to recover some data from that tape?

Update:

Inventory and catalog doesn't help, media settings are overwrite, not append. It is a DLT drive.

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