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Problems Restoring


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We are using Retrospect Server 6.1 on a Mac OS-X 13.3.9 G4 system. Our storage hardware is an Overland SDLT Loader Xpress. The system has no problem backing up and verifying, but we have difficulty restoring data from the backup sets. Since we rotate tape libraries, I would suspect worn tapes, except that I would expect to see problems verifying data if this were indeed the issue.

 

What usually happens is at some point durring the restore procedure, the loader will display "idle" on it's activity window, while the Retrospect window will be stuck on "Seeking" or "restoring." Sometimes I get the -102 error, sometimes the system just stops responding.

 

I've tried using both an Atto UL3D and an Adaptec 29160 card. I've also tried "clocking down" the SCSI card to 10 MB/Sec hoping this would make it more stable, but to no avail.

 

Ideas and suggestions would be much appreciated.

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You might try a test backup to a new tape, but in my experience, this kind of problem is more likely to be somewhere in the SCSI chain. (Bad tapes typically generate a 206 error.) Take a look at the SCSI troubleshooting tips in the user's manual.

 

50- and 65-pin SCSI cables have very tender pins, and it's not all that hard to bend a pin by misalignng the plug slightly during a card or device swap. A bent pin or other problems with the cable can cause communication problems of the type you're experiencing.

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