RE: Are Tapes Verified During Backup?

Running a 'verify' on Backup Exec (Windows servers) reads all the checksums on the media to ensure the data was written correctly. Not sure if this helps, but I think it is a common definition of verify. You can also look at the Wikipedia source for measuring a backup process: http://en.wikipedia.org/wiki/Backup#Measuring_the_process

It refers to 'validation', but I think that is the same as Verify.

-Jim

Jim Steil
VP of Information Technology
Quality Liquid Feeds, Inc.
608.935.2345 office
608.341.9896 cell

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jack Kingsley
Sent: Tuesday, April 20, 2010 10:32 AM
To: Midrange Systems Technical Discussion
Subject: Re: Are Tapes Verified During Backup?

They referring to the fact that you have to be able to read the tape?? They
looking for dsptap of *LABELS printed out with the tape.

On Tue, Apr 20, 2010 at 10:49 AM, Jerry Adams <Jerry@xxxxxxxxxxxxxxx> wrote:

In this year's audit letter, the auditors said that the tapes that we use
for backup are not verified. We have a 6384 Model 001 (1/4" tape cartridge)
on a model 520.

I have been searching both Midrange, the InfoCenter, and Redbooks/Manuals
trying to find out if the tapes are verified. Can't find anything, but
thought one of you might know and, hopefully, point me to a URL that I can
use in my reply.

I suspect that the tapes are verified simply because the PRTERRLOG report
shows temporary and permanent errors. I print these at the end of each
week, and only see a small number of temporary errors (1 or 2 per tape).
Reasonably it seems to me that the system would not know if it had an error
unless it was checking (verifying) what it wrote.

Thanks.

Jerry C. Adams
IBM System i Programmer/Analyst
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office: 615-995-7024
email: jerry@xxxxxxxxxxxxxxx<mailto:jerry@xxxxxxxxxxxxxxx>

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