At Fri, 28 Jan 2011 12:41:08 -0500 Joe Konecny <[email protected]> wrote:
> > I'm in the process of buying a new file server with 1TB storage. We will > use probably 100GB and expecting usage to grow 10% per year. Our present > server is backed up to tape using Amanda. The tapes are taken off-site > each night to an employees house but are not in a fireproof location. > We would like to back up our new server to disk on another server in a > different building connected with GbE. We no longer wish to use tapes. > The buildings are about 200 feet apart and are not physically connected. > An off-site storage of a monthly backup to a removable drive may be used. > Assuming we would have a 7 day rotation on the backup we are ok but as > usage grows we would need to add storage. The server and backup server > sites are physically secure and have alarm systems and video surveillance. > They both have sprinkler systems. The greatest threats in descending > order would be theft, fire, tornado. We think it is unlikely for fire, > theft to damage both systems and tornado damage is a very low chance. > > 1. Given that we do not want to use tape is Amanda still an option that should > be looked at? Amanda can use 'virtual' tapes on a 'virtual' tape changer. This is just a directory with a number of 'slot' directories. Each slot directory is a 'tape'. Amanda will write a tape label and a bunch of backup file 'parts'. One configures the size of each tape and the max size of each 'part'. Typically, you set the size of each tape to be large enough for one days likely maximum backup size. (Amanda can use gzip to compress the backups.) You can use Amvault to copy from the on-line backup changer to another 'changer', one that would be your off-site removable disk media (or DVD-Rs). Yes, even if you don't have actual tapes, Amanda is still an option. > > 2. How much storage capacity should we have on the backup server running > amanda? For just a single 7 day cycle you would need enough storage for a (compressed) full backup of each DLE, plus 6 days worth of (compressed) incrementals. If you want a full month's worth of backups on-line you would need enough for 4 or 5 weeks worth (4-5 fulls of each DLE, plus 24-30 incrementals). > > 3. Give what I describe does anyone have concerns? > > -- Robert Heller -- 978-544-6933 / [email protected] Deepwoods Software -- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments
