jpbuse Posted October 10, 2006 Report Share Posted October 10, 2006 I've got an Exabyte LTO Magnum 224L SCSI tape library connected to a DP 1.8Ghz G5 w/ 6.5MB RAM. There is an ATTO ExpressPCI UL4S single channel Ultra320 SCSI in the G5. LTO device is properly terminated. The G5 is running the latest version of Retrospect server backup. G5 is connected via gigabit ethernet to the same switch as my xServes I am backup up data from. I'm trying to backup 2 xServes over a gigabit network. One xServe is running 10.4.7 and the other is running 10.4.8 (server). I've got the latest version of the Retrospect client on both machines. I'll admit that for the past 2-3 years I have not been using Retrospect for my backups. I've been using a homegrown method involving tar, rsync, etc. I wanted a backup solution that would be hands free to handle both daily incrementals and weekly full images. Anyways, so far I've got nothing but problems and I'm not sure where to start to troubleshoot. My Incremental script runs at 10pm M-F. Around 10:20pm the script will fail and the error message left on the screen says 'error 205 (lost access to storage medium)'. This happens every single time as far as I can tell. At this point I can manually run the script and it will work some of the times. I say some because quite often it will choke part way through the backups and just hang and not do anything. For example, I am looking at the server from last night's backup and it is just hanging at maybe 50% completion of the backups. I have to manually stop it and the logs don't give me any useful information. Most of the time when I stop the script I have to force quit Retrospect to use it again. Most of time by doing this I lose connection to the LTO so I must restart the G5 to see the LTO device again. This issue so far is the biggest and most annoying issue I have for obvious reasons. I've been running this system for maybe 10-12 days and have yet to have a single success. I haven't dealt with external SCSI devices on a Mac for many years so a part of me is wondering about the SCSI connection between the server and the LTO. I had thought about going to the fibre channel instead but it didn't seem worth the extra cost at the time. Any ideas on where to start to troubleshoot? I'm going to be calling Exabyte support today and see what they know but my experience with Mac support forums as been good and I'm looking forward to seeing what responses I may get. Quote Link to comment Share on other sites More sharing options...
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