Kathleen,

The obvious answer is to clone again, but I realize thats no what you want to 
hear. It does however read the complete tape again and verifies that it is ok 
both in data and in structure.

Simple data only could be done with just reading the tape with a tool like dd 
on unix but that only validates that the tape is readable and not that it is 
internally consistent.

(after cloning it a second time one could delete the 3th copy, cloning to 
disks springs to mind as an option, not to watste to many tapes)

This will only prove however that at the time of the cloning the data and the 
tape are OK and does not address the fact that after cloning data corruption 
could happen just because its a physical medium.

If your conong is to have a copy for longer storage than the original, ( clone 
and original with different retention time and expiration) then by all means 
have a extra copy made.

Hope this helps a bit,

Maarten

On Thursday 19 January 2006 15:42, Kathleen wrote:
> Question...how do you verify the validity of a clone?
>
> If you clone a backup and it clones successfully, then you know you have a
> good backup.  Does anybody have any tips on how to verify the cloned
> data?  Would that be another clone?
>
> Just so happens my 'index' from a year end/month-end backup - clone is
> corrupt, got a bad record.  The next index I have is a differential, which
> if I understand the indexes correctly, the only thing in the
> differential/incremental index is what was backed up vs that of a FULL
> index which is a copy of the entire index.
>
> Question 2...if I scan the entire save set (excluding the index) can
> I/will it rebuild the index?
>
> To sign off this list, send email to listserv AT listserv.temple DOT edu and 
> type
> "signoff networker" in the body of the email. Please write to
> networker-request AT listserv.temple DOT edu if you have any problems wit this
> list. You can access the archives at
> http://listserv.temple.edu/archives/networker.html or via RSS at
> http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER

-- 
Maarten Boot, 
Compuware Europe B.V.
Hoogoorddreef 5
1101 BA Amsterdam
Tel: +31 20 312 6511

To sign off this list, send email to listserv AT listserv.temple DOT edu and 
type "signoff networker" in the
body of the email. Please write to networker-request AT listserv.temple DOT edu 
if you have any problems
wit this list. You can access the archives at 
http://listserv.temple.edu/archives/networker.html or
via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER