On a similar note how does NDMP play with Disk de-dup? All of the de-dups I've seem are NAS devices. NDMP only talks to tape or VTL. Are there VTL's with De-dup that would solve the NDMP problem?
Jim -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dave Markham Sent: Monday, September 24, 2007 8:35 AM To: Jeff Lightner Cc: veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] Tapeless backup environments? Guys i've just read this thread and can say im very interested in it. The first thing is i learned a new term called deduplication which i didn't know existed. Question : I gather Deduplication is using other software. DataDomain i think i saw mentioned. Where does this fit in with Netbackup and does the software reside on every client or just a server somewhere? Ok, so im trying to kit refresh a backup environment for a customer which has 2 sites. Production and DR about 200 miles apart. There is a link between the sites but the customer will probably frown on increased bandwidth charges to transfer backup data across for DisasterRecovery purposes. Data is probably only 1 TB for the site with perhaps 70% being required to be transfered daily to offsite media. Currently i use tape and i was just speccing a new tape system as i thought by using disk based backups, and retentions of weekly/monthly backups lasting say 6 weeks, im going to need a LOT of disk, plus the bandwidth transfer costs to DR site LTO3 tapes are storing 200gb a tape which is pretty good compared to disk i thought. I guess in my set up its a trade off between :- Initial cost of disk array vs initial cost of tape library, drives and media Time take to backup ( network will be bottle neck here. Still on 100Meg lan with just 2 DB servers using GigaBit lan to backup server. Offsite transfer of tapes daily to offsite location vs Cost of increased bandwith between sites to transfer backup data. Im now confused what to propose :) _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu