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My apologies at my lack of detail.
We are currently backing up 76 network clients roughly evenly split between Macs and Windows systems, in addition to 5 Windows servers. We need to scale up to 1000+ networked systems, also fairly evenly split between platforms. We recently moved from a 2 drive DLT7000 30 tape autoloader to an old 2 drive LTO-1 24 tape autoloader. We are looking at replacing this with a multi-drive LTO-2 at some point. We are only looking to restore data not system state. Ideally, weekly tape changes with a 1 month archive. We have a gig backbone with 100Mb to desktop in most areas.
What makes the current solution problematic is that the scripted backups fail on a fairly regular basis. Before switching to the LTO library, the backup sets would get out of sync and require a repair at least once a week. With the DLT library we were maxing out at 45MB/min data transfer throughput. Moving to LTO has improved to 200MB/min on average and also seemingly eliminated the out of sync issue. However, the new problem is that Retrospect loses connectivity with one or both of the drives, requiring a restarted of the server.
I’m sure there are more questions, but that’s a start to answering some.
Robert
