On Wed, 2008-12-17 at 11:37 -0600, Ryan Malayter wrote: > On Wed, Dec 17, 2008 at 5:46 AM, MW <rs...@urmel.demon.co.uk> wrote: > > Anyway, I will try the --inplace option but cold > > you explain what you mean by "VSS snapshots" please? > > Many modern operating systems have a "snapshot" function, which allows > you to save a point-in-time copy of the state of a file system for in > a space-efficient way. On Windows, this is called "Volume ShadowCopy > Service" or VSS. On Mac OSX, this is called "Time Machine", and on > Linux it can be a number of things but is usually done at the "LVM" > layer. > > So, if you use rsync to send your PST files to your Mac using > --inplace, you can set up Time Machine to retain snapshots of the > destination filesystem on the mac. So only changed blocks should be > stored between versions of your PST file, with unchanged data being > "shared" between the live copy and the snapshots.
Time Machine is a file-level hard-linked backup tool like rsnapshot, not a block-level snapshot facility like VSS or LVM: http://arstechnica.com/reviews/os/mac-os-x-10-5.ars/14 I don't know if Mac OS X has block-level snapshots. Another option would be rdiff-backup ( http://nongnu.org/rdiff-backup/ ), which is similar in concept to rsnapshot but stores the latest snapshot and backward deltas. -- Matt -- Please use reply-all for most replies to avoid omitting the mailing list. To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html