atlantisnet Posted December 1, 2008 Report Share Posted December 1, 2008 All of a sudden I am getting an error which says "Trouble matching Local Disk (C:) to Backup Set B, error -641 (chunk checksum didn't match)". I am running: Retrospect Multi Server Version 7.6.111 Driver Update and Hot Fix, version 7.6.1.101 on a Windows 2000 SP4 Server. I have tried restarting the server and performed a recatalog. The problem still persists. I tried searching these forums and the knowledgebase but was unable to find any information about this error. I am currently unable to perform any backup. Does anyone know how to resolve this error? Quote Link to comment Share on other sites More sharing options...
Mayoff Posted December 1, 2008 Report Share Posted December 1, 2008 Are you able to backup to other backup sets? What exact steps did you take to "recatalog"? Quote Link to comment Share on other sites More sharing options...
atlantisnet Posted December 1, 2008 Author Report Share Posted December 1, 2008 Yes, I am able to backup to a different backup set. First I tried "Tools", "Repair Catalog", "Repair File Backup Set" but received an error saying "Can't use a valid non-file backup set to recreate." so instead I ran "Tools", "Repair Catalog", "Update Existing Catalog File" which completed without error. Quote Link to comment Share on other sites More sharing options...
Mayoff Posted December 2, 2008 Report Share Posted December 2, 2008 None of those are the right option. You must do a Recreate from Disk. Quote Link to comment Share on other sites More sharing options...
atlantisnet Posted December 3, 2008 Author Report Share Posted December 3, 2008 That worked! Thank you. It took 7 hours and 47 minutes to recatalog the backup set but now I am able to backup without error. I hope this doesn't happen too often. Quote Link to comment Share on other sites More sharing options...
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