Re: verifing on-archvies and log tabes

> For a 5.x engine on a unix OS, is there anyway to verify that > archive and log tapes are good? > > does 7.x engine provide this utility? > > pmarvin@conklin-inc.com The only way I know to *really* know is to do it. Periodically. We try to perform an archive and restore at least once to ensure that the procedure is both viable and well-documented. I like to have someone who is not familiar with the system try it (under close supervision!) so that together we can develop answers--in advance--to the questions that will arise. The OL v7 engine provides a couple of radically different archive mechanisms: ontape and ON-Archive. They warrant a two-day course from Informix and their own manual ("Informix-OnLine Dynamic Server Archive and Backup Guide Version 7.1", December 1994, part number 000-7627). Still, the short answer is that ON-Archive has an optional cyclic-redundancy-check field (a type of check-sum) which provides some assurance that the save set is not corrupt. I would not bet my job on just the CRC, though. Test it, try it, verify it. :) __________________________________________________________________ | Clem Akins Standard Disclaimers Apply | |Reynolds Metals Co, Alloys Plant "Climb High, Cave Deep!" | | Muscle Shoals, Alabama USA cwakins@leia.alloys.rmc.com | |________________________________________________________________|