Hey, all! I've got a client who was running backups to tape using amanda for several years and the backup server finally died. After much discussion, the decision was reached to replace it with a new box mounting a pair of 160G hard drives (in a RAID1 mirror) and a pair of external DVD burners. I figure the hard drives will comfortably handle 3 weeks' worth of backups (amanda was previously averaging a little over 7G/night, M-F, so rounding that up to 8G/run * 5 runs/week * 3 weeks = 120G, leaving 40G for formatting info, the OS, etc.), plus they want the backups burned to DVD (presumably nightly, as 7+G will fill most of 2 DVDs) and, on top of that, they want to see how often it's feasible to send copies of the backups to another facility via T-1 (either nightly or weekly).
My amanda experience to date has been entirely with standard runtapes=1, changer=manual setups, so I'm not entirely sure of the best way to do configure this. I expect that the backups to HD should be pretty straightforward using the vtape driver and I assume that doing the offsite with a script run from cron independently of amanda should be even easier. The DVDs I'm not so sure about, though. Would it be possible (and advisable...) to get amanda to write the backups to DVD and vtape concurrently, or will I need to set up another script to run after amanda is done, sort the night's backups into two DVD-sized chunks, and burn them? (Or, for that matter, would it be best to set up a weekly archival config for amanda and just let it spill over onto >2 DVDs, since that version is intended for long-term archiving anyhow?)
