On 06/11/07 04:40, Mitja Podreka wrote:
Douglas Allan Tutty wrote:You mean separate power supply for additional drive(s)? Is it to switch it off after backup is finished?To protect users from their own errors, you could just backup to /var/local/backup on your existing raid5 array. To protect the raid5 array, add a spare drive on a different controller if possible to provide some failover. Add two for raid1. If you have a spare computer, backup to that. This could be your workstation. Add a drive or two (for raid1 there). Have it on a separate power supply/UPS/whatever.I found an external USB drive with 320GB. I was thinking to buy one for beginning. But now I might buy more.Then, external USB makes sense. Get three: one hot, one on-site cold, one off-site cold for disaster. Have you found an external USB drive that takes 270 GB or will you have multiple drives and use your backup software for volume management?
Don't buy a "prepackaged" external drive!Buy the enclosure and drive separately. You'll save money and can choose the optimum sized drive for your needs.
If you are doing backups for many faculty, a multi-drive FireWire 800 enclosure filled with 750GB drives might be what you need, instead.
Did you mean: one hot - all the time connected to workstation? one on-site cold - not connected but at the faculty? one off-site cold - not connected located outside of the building?
No need for options "1" and "2". If you only do these restores a few times a month, walking down the hall to get the drive isn't that difficult.
I recommend having 2 (or more) drives off-site, each older than the other. Rotate them along with your on-site drive.
That way, you always have a current backup, a week old backup, two week old backup, etc, etc.
-- Ron Johnson, Jr. Jefferson LA USA Give a man a fish, and he eats for a day. Hit him with a fish, and he goes away for good!