Reading through the posts, I know there are a few users working with the Quantum HH LTO 4 and Retrospect 6.1 on OS X.
I recently set up my own system running on a new 2.8 GHZ Quad Mac Pro.
The software and hardware setup was simple enough and Retrospect backed up the data (A 100GB OS backup) to the Quantum seemingly well but upon verifying the data Retrospect would hang. The program would show about 100% CPU activity but it stopped all activity ( even after over 30 minutes of sitting).
After shutting down and rebooting I later tried to restore the backup only to have Retrospect hang again. Since it seemed to hang on the same file (an illustrator plug-in) I scanned the drive to see if any files were corrupt and Disk Warrior and Techtool Pro. Everything checked out fine.
When I later tried another backup of just the folder that included that Illustrator plug-in; the backup, verify, and restore was successful.
I tried backing up a Final Cut Pro project consisting of DV files, audio and GFX (roughly 650 GB). Again the backing up to tape seemed fine with no errors reported.
Upon trying to either verify or restore the project Retrospect would soon hang. It's interesting that the hang ups would usually occur within the first 1 GB.
Whenever Retrospect would hang the Quantum LTO4 would flash the #8 in it's status window with a blinking light on the left of it. The Quantum manual indicates an interface fault. Not sure what's up there.
The OS (through about this Mac) and Retrospect never seem to have a problem recognizing the drive
I read that Retrospect did not work well with RAM over 3 GBs so I stripped my 10 GBs of Ram down to 2 GB. Problem still occurs.
Been in touch with Quantum and trying to talk with EMC to see if they can help.
Since many users seem to be successful with this setup, can anyone share some insight regarding this problem?
Like any RED user, a reliable backup system is crucial and this problem can really affect my ability to see projects through.
I'm stumped on this one. Any help would be greatly appreciated.
Full system specs are below.
Mac OS 10.5.5
2.8 Quad Mac PRO
Retrospect 6.1 w/ latest 6.1 Driver Update
LSI SAS 3801E Host Bus Adapter
Quantum LTO 4 HH TC-L42BN-EY (Table top)
Quantum LTO 4 data cartridge