DigiAngel Posted October 5, 2007 Report Share Posted October 5, 2007 Hey all, So here's where I'm at. Getting a bad backup set header on an archive that's a single file on a brand new 500 gig drive during the verification phase. I read the KB article on bad backup set headers, but it didn't give me much insight. Any cluse as to why I could be getting this? Thanks all. James Quote Link to comment Share on other sites More sharing options...
thinkjim Posted October 8, 2007 Report Share Posted October 8, 2007 I am using retrospect 7.5 and am unable to get it to backup to single files at all. I have tried this on two servers, and it fails to both local disks and attached storage media. We get a 'Bad Backup Set header' error in the log files. I have to say I'm thinking of switching to Backupexec because Retrospect is so shockingly bug ridden. This is just one of many problems we've had. Quote Link to comment Share on other sites More sharing options...
thinkjim Posted October 8, 2007 Report Share Posted October 8, 2007 P.S. I posted the problem on this forum some weeks ago and got no reply. I think it would probably help if EMC had some tech's working on their forums! all you seem to find here are problems and no solutions. Quote Link to comment Share on other sites More sharing options...
DigiAngel Posted October 10, 2007 Author Report Share Posted October 10, 2007 Alas..I suspect that the DR people don't really want to have a tech monitor here...this would cut into their support contract monies. I'm still getting these errors...even though when I do a media verification it comes up fine. Interesting. Quote Link to comment Share on other sites More sharing options...
DigiAngel Posted October 25, 2007 Author Report Share Posted October 25, 2007 This morning we purchased annual support. I will let everyone know how their support is, and what the resolution to this is. Quote Link to comment Share on other sites More sharing options...
DigiAngel Posted October 25, 2007 Author Report Share Posted October 25, 2007 Interesting.....from the tech "don't use file backup sets". Use Disk backup sets instead. Gonna try that and go. Quote Link to comment Share on other sites More sharing options...
aandi Posted October 31, 2007 Report Share Posted October 31, 2007 This is shocking. Our entire backup strategy is based on file backup sets, and has been for years, without any problems until 7.5. We have been seeing this error, and trying to decide what to do. Quote Link to comment Share on other sites More sharing options...
aandi Posted October 31, 2007 Report Share Posted October 31, 2007 One thing worth checking. I am getting this for DES encrypted backups (I also regularly get an assertion failure in des-cpp). I also speculate that the problem is actually in the verification, though I have still to do an exhaustive check of a backup that failed verification. Has anyone seen this on backups that are unencrypted or not using DES? Quote Link to comment Share on other sites More sharing options...
Mayoff Posted October 31, 2007 Report Share Posted October 31, 2007 Several reasons to use Disk Backup Sets on Windows instead of File Backup Sets 1) File Backup Sets use more RAM during backup then Disk Sets 2) Disk backup Sets can span to multiple disk 3) Disk Backup Sets have the ability to Groom old data from the backup 4) Disk backup Sets are probably going to be faster then file 5) If a file backup set gets corrupted, you are hosed. With a Disk backup set, the data is broken into 600 MB chunks. You can live without one "chunK" if it gets corrupted. 6) Disk Backup Sets support UIR. 7) You can get properties on a Disk Backup Set Catalog file during backup. 8) You can restore from a disk backup set in the middle of a backup to the same set. Quote Link to comment Share on other sites More sharing options...
aandi Posted October 31, 2007 Report Share Posted October 31, 2007 These may be good reasons, but the key thing is: are these backups now unreliable? Quote Link to comment Share on other sites More sharing options...
Mayoff Posted November 1, 2007 Report Share Posted November 1, 2007 No they are not unreliable. Quote Link to comment Share on other sites More sharing options...
aandi Posted November 1, 2007 Report Share Posted November 1, 2007 That's good to hear. (I have good reasons for using file backups, but I don't want to confuse the discussion with that at the moment: it wasn't a random selection, but the reason for choosing Retrospect). Given that the backups shouldn't be unreliable, can you suggest any way forward from the "bad backup set headers" message when doing a verification as part of the backup? I should say that there may be nothing wrong with the backups, since a later Verify Media does not give any suggestions of problems. Should tech support be able to help, or will they just tell me to use Disk backups? Quote Link to comment Share on other sites More sharing options...
Mayoff Posted November 1, 2007 Report Share Posted November 1, 2007 see: http://kb.dantz.com/article.asp?article=5410&p=2 Quote Link to comment Share on other sites More sharing options...
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