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How to verify ontape archive without restoring?

Posted in 2008

Topics: Backup & Restore, Storage & Space Management, Versions, Editions & End-of-Life

JONATHAN — — source: IIUG Forums & Mailing Lists

Hi. We are using IDS 10.00FC4X5. We have a database that is just over 1 terabyte in size, and we do a level 0 archive of it weekly using ontape (we never do level 1 or 2). I was wondering if there was a way to verify the archive without doing a full restore of the tape. Mostly because it's very time consuming to do so, but also because we don't really have anywhere to actually do the restore into. So is there some special "tape verify" command, or could I restore a couple DBspaces somehow--and if I did this, would I need a database of the same time to do so? Just looking for some ideas. Thanks in advance. Jonathan

↪ replying to JONATHAN
Art Kagel — — source: IIUG Forums & Mailing Lists

Check out archecker, that's it's primary purpose, to verify and validate an archive. Art S. Kagel Oninit On Wed, May 21, 2008 at 1:07 PM, JONATHAN WILLIAMS < jonathw@shubertticketing.com> wrote: > Hi. We are using IDS 10.00FC4X5. We have a database that is just over 1 > terabyte in size, and we do a level 0 archive of it weekly using ontape (we > never do level 1 or 2). > > I was wondering if there was a way to verify the archive without doing a > full > restore of the tape. Mostly because it's very time consuming to do so, but > also because we don't really have anywhere to actually do the restore into. > So > is there some special "tape verify" command, or could I restore a couple > DBspaces somehow--and if I did this, would I need a database of the same > time > to do so? > > Just looking for some ideas. Thanks in advance. > > Jonathan > > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > >

↪ replying to Art Kagel
JONATHAN — — source: IIUG Forums & Mailing Lists

Thanks for the help. The archecker utility definitely seems to do the trick. It's unfortunate that it takes as long to verify as the backup takes, but I guess there's no way around that. Thanks again Jonathan

↪ replying to JONATHAN
Art Kagel — — source: IIUG Forums & Mailing Lists

Archecker is actually better than using a restore to check the archive. A successful restore doesn't guarantee that the archive didn't miss any pages. Archecker verifies that every page that's supposed to be on the archive is in there including the preimages of pages modified during the archive. It was years before anyone realized that in Online version 5.01 through 5.07 ontape was missing pages if the server was busy. There was no archecker than and many of us did restore testing and never figured it out. On Thu, May 22, 2008 at 11:49 AM, JONATHAN WILLIAMS < jonathw@shubertticketing.com> wrote: > Thanks for the help. The archecker utility definitely seems to do the > trick. > It's unfortunate that it takes as long to verify as the backup takes, but I > guess there's no way around that. > > Thanks again > > Jonathan > > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > > -- Art S. Kagel Oninit (www.oninit.com) IIUG Board of Directors (art@iiug.org) Disclaimer: Please keep in mind that my own opinions are my own opinions and do not reflect on my employer, Oninit, the IIUG, nor any other organization with which I am associated either explicitely or implicitely. Neither do those opinions reflect those of other individuals affiliated with any entity with which I am affiliated nor those of the entities themselves.

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