We have been running disk to disk (NAS) backups on our network for over a year now. Our Windows SBS 2003 server acts as the backup server and computers on our domain are backed up using the proactive backup feature built into Retrospect.
The Backup Sets are broken into logical groups like Eng, Mfg, Sales etc and are stored on a Raid NAS (ReadyNAS NV+ with latest firmware). Each of these backup sets varies in size but typically run about 300 or so Gig.
I am getting frequent "Bad Backup Set header found..." errors. In order to recover from these I need to repair the catalog file and this can take 5-10 hours depending on how big it is.
These errors are currently happening a lot with one specific group, but it does happen with others from time to time as well.
I contacted EMC about this and they are blaming my NAS or faulty network hardware. However I have never had any other network related problems and I have even run load tests on the NAS and they do not show any issues.
Has anyone had this issue and found a real solution?
Perhaps there is a maximum size of Backup Set that I am hitting? EMC did mention that mine are pretty big. I am going to split these up into smaller groups soon so the recovery via repair catalog is faster no matter what (time permitting), but it would be nice to know the root cause.
Other than this issue Retrospect has been working very well in combination with our Quantum Autoloader 3 DLT-S4 800 Gig Native tape backup.
BTW all the desktops are Dell Dimension or Precision machines with the shipped hardware in them. The server is a Dell PowerEdge 2600 on a single Xeon 3.06 GHz with 3 Gigs of RAM.
Thanks
Start Free Trial
