On Mon, 2005-03-14 at 16:44 -0600, Miles O'Neal wrote:
> We're looking at going to multiple tiers
> of filespace.  Our tier1 is a couple of
> NetApp fileservers.  These automatically
> snapshot things.  But we can't afford
> NetApp for all our disk space, and are
> going to build some PC-based fileservers
> using SL.

LVM is what you are after.


Also, your post made me remember Openfiler
http://www.openfiler.org/about/

As this works with CentOS or Redhat Enterprise I see
no reason why it won't work with SL.
The about page says that scheduled snapshotting is in testing.
Might be just the dab for you.
I guess you could do a lot worse that download this and give it
a try.