2nd thing consider not
duplicating from tape. They can only do one thing at a time and can end
up searching for data sequentially. Consider basic disk and staging, or
synthetic backup, or deduplication in combination with data life cycle
policies.
BasicDisk is free, and can make use of cheap local disk attached to the
backup server. If you have a few 3.5" drive slots, filling them with
large disks and doing a RAID0 or a concatenation with windows software
raid will give you a lot of space to work with. unprotected space is
probably OK, if you lose the disk you only lose the current backups that
haven't been spooled to tape yet. (of course, your business
requirements may vary)
Since you're doing lots of simultaneous backups, 7200rpm disks are going
to do a lot better than 5400.
BasicDisk is also easy to set up. If you don't have the money for the
better solutions, It's totally the way to go instead of multiplexing.
Create a new "storage unit" under netbackup management -> storage
-> storage units. There's a check box for "staging", it will
automatically back up to the disk volume you give it, then spool things
off to tape when the disk backup is done. It took me a few hours to get
it all working, including reading a few docs.
-- Dan Pritts ICPSR Computing
& Network Services University of Michigan +1 (734)615-7362
