Andre Beuving Posted December 16, 2003 Report Share Posted December 16, 2003 Hi, I've got this annoying problem I can't get solved with my SCSI Seagate DAT (gsp40). I used to backup several systems with an old Seagate DAT drive on 1.2 Gb tapes. Reading and writing was fine. The old drive had to be replaced, and now I've got this speed problem: - Reading old 1,2 Gb tapes is fast: 50Mb+ - Writing new 12Gb tapes is slow: approx. 10Mb. While writing, speed is constantly changing between 0Mb and approx. 30Mb, so the 10Mb is an average. During 'idle' time I can hear the drive winding/rewinding (or something alike). I do not use any compression. I checked SCSI, updated Retrospect drivers, tried an old Retrospect version, tried other tapes, tried backup from local disk... nothing. As you will understand: ANY help highly appreciated! Andre Link to comment Share on other sites More sharing options...
natew Posted December 17, 2003 Report Share Posted December 17, 2003 Hi, Does your new dat drive use the same SCSI connection as the old one? What SCSI card are you using and what other SCSI devices do you have? Nate Link to comment Share on other sites More sharing options...
Andre Beuving Posted December 18, 2003 Author Report Share Posted December 18, 2003 Hi Nate, thank you for your reply! Same SCSI? Yes and No: I tried on the same system, with and without other devices. But also tried to run on other systems: same result. I'm confident this is not a simple SCSI problem as I followed Dantz' recommendations on checking for SCSI errors (cables, systems, terminators). The initial system is a 9600 with standard SCSI. Can't tell you which type of SCSI that is. Other systems I tried use various types of SCSI like UW. Andre Link to comment Share on other sites More sharing options...
Andre Beuving Posted December 18, 2003 Author Report Share Posted December 18, 2003 Nate, found the 'problem'! Our Seagate is an OEM drive by LaCie. It needs their SilverLining utility for the drive to operate well. Hmmmm. Anyway: problem solved. Thanks! Andre Link to comment Share on other sites More sharing options...
natew Posted December 29, 2003 Report Share Posted December 29, 2003 Ah yes -Extensions... Must admit I had not seen this one before. Glad to hear you are up and running! Nate Link to comment Share on other sites More sharing options...
Andre Beuving Posted December 29, 2003 Author Report Share Posted December 29, 2003 Nate, Ehhhh... in fact.... not up and running.... I guess I was too enthousiastic after just one short test... Indead we sometimes get a high speed, but on the long run we still got these idle times reducing overall performance to well below acceptable... I'm almost convinced it's the drive itself. We are looking into replacing the drive (once again) by a DVD writer. If you've got a clue about the DAT problem, please contact me. TIA Andre Beuving Link to comment Share on other sites More sharing options...
natew Posted December 30, 2003 Report Share Posted December 30, 2003 Hi Before you give up on the drive you should probably try attaching it to another mac with a base extension set + Retrospect. I have not seen a drive be bad because it is running slowly. Usually you will see other errors when the drive is failing Nate Link to comment Share on other sites More sharing options...
Andre Beuving Posted December 30, 2003 Author Report Share Posted December 30, 2003 Nate, that is exactly what the problem is: can't get it running on any MAC with any SCSI card. Tried several cables, investigated termination, of course had to install software multiple times, updated drivers, tried with and without the extension for the drive.... Argh! The drive is the last option in my opinion. I'm trying to get a replacement for the drive just to see if it causes the problems. Thanks! Andre Link to comment Share on other sites More sharing options...
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