Buy cheaper storage for backups. Look into using VTL's or disk based backup systems. You can get 20TB sata for < $2000 I don't see the problem with handling large datasets these days.
On Mon, Feb 2, 2009 at 11:27 AM, Elizabeth Schwartz <[email protected]> wrote: > Fixed-in-stone parameters: > > 1) We outsource backup to central IT. > 2) We are charged by the gigabyte, per backup run > 3) The backup provider uses Legato > 4) We would like to minimize backup cost. > 5) Our data tends to be large and "clumpy" - in some random 1-to-4-day > period, someone will write 10 gigs of data which will then sit there > for months unchanged. > 6) The data is on a very very reliable SAN so full restores are > unlikely . We are willing to risk slow restores > 7) We do individual file restores occasionally. No more than once a month > max. > > > The current backup strategy, which we didn't design and *** initially > were unable to negotiate changes in *** is to do a full every 59 days, > then a weekly rotation of 7,6,4,5,3,2,1 (which is the same as doing > 2,2,2,2,2,2,1 , I know). This strategy minimizes tapes needed to do a > full restore, but for data like ours it tends to maximize *cost*. > It's time to negotiate a change. > > The obvious thing would be to go to full every 59 days and a > 1,2,3,4,5,6,7 rotation, but I'm thinking we should get a little > creative. If we do a full on Sunday and someone dumps 10G on Monday, > that 10G will get backed up eight times. I'm thinking the first week > should start with a 1, second with a 2, third with a 3, etc ... > (Legato has 9 levels, I believe...?) > > any thoughts, suggestions, clue bonks? > > > > > -- > Unix Systems Administrator > Harvard Graduate School of Design > _______________________________________________ > Tech mailing list > [email protected] > http://lopsa.org/cgi-bin/mailman/listinfo/tech > This list provided by the League of Professional System Administrators > http://lopsa.org/ > -- [ Rodrick R. Brown ] http://www.rodrickbrown.com http://www.linkedin.com/in/rodrickbrown _______________________________________________ Tech mailing list [email protected] http://lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
