Unfortunaley the only real way to verify a tape is to clone it
(One could clone to disk for that purpose and delete the clone
afterwards )

Maarten

-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On
Behalf Of Stan Horwitz
Sent: Tuesday, October 31, 2006 7:28 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: [Networker] Verifying data written

On Oct 31, 2006, at 12:43 AM, Kobus Strydom wrote:

> Good day list
>
> Is there any way/script I can run to check the integrity of my backups

> that completed?
>
> I had a SCSI bus reset problem recently which made my backups useless,

> after showing that they completed successful.

I don't have a script to do this, but I was just asked for exactly the
same thing by my manager as a precaution to avoid the problem you just
cited. What I am thinking of doing is putting a few files in a directory
on a client, on each disk or partition on that client, then touching
each test file every day via a scheduled job on that client.  
Then all I think I need to do is set up another scheduled job to recover
the most recent backup of those files into the same directory where they
reside and simply do a diff of the recovered files against the original
copy, and if the diff finds any differences, sent out alerts to people,
and delete the recovered files if they are okay.  
Its not fool proof, but it should work.

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