I wouldn't recommend backing up straight to tape; you'll either get partial backups if servces are running or the Zimbra services will have to be down for a LONG time.
Why not Hot-rsync/Stop/Cold-rsync/Restart to another directory (assuming sufficient space) and back that up to tape.
My rsyncs (56+GB) take about 3 minutes and the tar/gzip over ssh takes a further 1.5 hours this would be about the same as going to tape. Zimbra is usually stopped for a total of about 30 second during this time.
Last edited by jonallport; 09-03-2009 at 12:47 AM..
Reason: Gave compressed size not true size
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