On Wed, Jan 17, 2007 at 06:21:11PM -0600, Tim Mooney wrote: > > Believe it or not, it can take longer to do a true incremental of a > large filesystem (e.g. 250 GB in size, 210 GB used, 3.5 million files) > where almost nothing has changed than it takes to do a full backup of > the same filesystem. We've seen that several times on our largest > filesystems, which are generally Linux boxes with ext3 filesystems > (one of them is Linux with XFS).
> We're using EMC/Legato NetWorker for our backups. This may be obvious to you, but just in case: it sounds like you are shoeshining your tape drives with your incrementals. To prevent that, two things come to mind: - multiplexing backups from many hosts onto one tape - staging your backups to disk (on the backup server) and then spooling them to tape. Veritas netbackup has this feature, i presume legato does too. danno -- Dan Pritts, System Administrator Internet2 office: +1-734-352-4953 | mobile: +1-734-834-7224 _______________________________________________ Imap-uw mailing list [email protected] https://mailman1.u.washington.edu/mailman/listinfo/imap-uw
