Quoting Rodrigo Barbosa <rodrigob at suespammers.org>: > On Wed, Dec 07, 2005 at 10:26:42AM -0600, Aleksandar Milivojevic wrote: >> I'd probably back it up to disk. Pair of 200-300GB drives (in RAID-1). >> Very inexpensive. > > The problem with that setup is that you can't get historical data. > If that is not an issue, then I agree RAID-1 is enough. Not true. You can do backup on disk exactly the same way you do them to tape. With tape, you calculate how big your backups are, and for how long you want to keep them. Then you go out and by that many tapes. With disk, you do the same thing and buy disk(s) of appropriate size. If you run out of tapes, you buy more tapes. If you run out of disk space for backup, you buy more disks. Same thing. Anyhow, cost of single SDLT tape is comparable to cost of disk drive of same capacity. >> Would be interesting to hear how did you envision to backup 2000 USB >> sticks that >> users are carrying around (and loosing them on regular basis)... > > You are shifting the responsibility for the backup. The user can > backup it on any machine, including his home computer. But it > is no longer the institution (school) responsibility to handle > the backup. The user is not going to bother to backup. He'll just blaim you for loosing his email (no matter who's responsibility it was on paper). Anyhow, as I said previously, for $100,000 (which would be price of USB sticks) you can buy really fancy storage with really fancy backup solution. Anyhow, I always hated people that are shifting responsibility they are paid to handle to somebody who is not supposed to have that responsibility in the first place. ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.