The quick answer is that it's too hard. In order to do an in-file incremental, you'd have to have intimate knowledge of the each kind of filesystem structure (ufs, vxfs, ext, ext3, etc).
By doing it at the file level, rather than the block level, the OS takes care of all that for you. -----Original Message----- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Jorge Fábregas Sent: Saturday, June 06, 2009 1:21 PM To: VERITAS-BU@mailman.eng.auburn.edu Subject: [Veritas-bu] In-File Delta Technology Hello everyone, I'm still learning Netbackup (got around 1.5 years working with it) and I'm wondering... Is there a way to perform incremental backups using in-file delta technology (backup only changes within a file)? I've seen a lot of features/options for Netbackup but I have never seen this...If indeed there isn't ...why isn't this type of ESSENTIAL technology part of Netbackup? Just as an aside, I recently started backing up a server that runs "MS Virtual Server" that has around 9 guests...I back them up at night (obviously after shutting down the guests) and I know 5 of those 9 guests seldomly change but as you can imagine...because the timestamp on the virtual-hard-disks change ...they're backed up COMPLETELY. The end result: I'm almost performing a FULL backup every day even though it's an incremental schedule :( I'll appreciate your feedback. Thanks! All the best, Jorge _______________________________________________ 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
