ZFS, backup

[Gregory Seidman]

On Thu, Jan 10, 2008 at 09:09:52AM -0700, Scott Ribe wrote:
> > Isn't there a filesystem (maybe it was primarily for Linux) that will
> > "mirror" a disk (or volume? partition?) to another machine over a network?
> 
> There are such filesystems (& other software combos). But that still doesn't
> give you back up in the sense of maintaining a history of older versions.

Actually, I think ZFS supports efficient, copy-on-write filesystem
snapshotting. That means it can, indeed, maintain a history of older
versions. Note that this has nothing to do with recoverability from disk or
machine failure, however, and does not replace (all) the purpose of good
backups.

> Scott Ribe
--Greg