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Found this on the web http://www.dlttape.com/DLTtape/Backup+Basics/Media+Calculator.htm Ken From: Jason B
[mailto:[EMAIL PROTECTED] Slightly OT for an AD forum, but since I've seen so much
great advice flow through this list, and we're populated with Sys Admins (who
are frequently in charge of backups) I figured I'd throw it out there. We have two Dell Tape autoloaders that have 8 slots (7 DLT
IV + 1 cleaning tape). One of the autoloaders exclusively handles
Exchange backups, the other is for backup of our NAS and Samba file
shares. Each DAT tape can hold 70-80GB compressed and we have ~280GB of
data to be backed up on multiple file servers (NAS, Samba shares and
others). We use CA's Brightstor ArcServe for backups (yuck - I MUCH
prefer BackupExec, and almost prefer NTBackup to ArcServe, but I'm
deviating). Right now, all that's done is load 7 tapes in there and
perform a full backup on Friday and incremental M-Th, and then overwrite that
each week - not desireable. I just acquired ~30 additional new tapes (DLT
IV) and want to see a few common backup rotations (like GFS) that would work
for us. Does anyone know of any "Backup calculators" where you
can put in the amount of data you have to back up, the time you want to have
backups for (like, say 3 months), etc... and have it make some
recomendations? I've seen some web-based tools like this, and IIRC,
BackupExec had one built in, but I can't seem to find any. Does anyone know of any? Thanks. |
