I have both a F20 and a FastT 600 with an 700EXP expansion. It all
depends on what your trying to do. I've been warned not to mix FastT
and ESS disk on the same FC adapter, it's been a long time since I did
it.

But, if you only have one system attached to it, and your not doing a
lot of intense IO's, the FastT is great. We use it for our test
systems. If you have multiple machines, you'll need to by the
partitioning code to present luns to each machine like the ESS.

The 900 is faster than the 600, and in some tests I've heard it can
beat the ESS, but I've heard that it doesn't scale as well for size,
and doesn't scale as well under a heavy IO load.

But, we like it for our TSM, test systems, and are looking at another
FastT for a document imaging system.

steve@wakefieldrfc.freeserve.co.uk (Steve Nottingham) wrote in message news:<42862645.0408310102.4f68fdee@posting.google. com>...
> sung.pak@gmail.com (Sung Pak) wrote in message news:<d6a40f8.0408301301.1e5905ad@posting.google.c om>...
> > I've been taking a look at F20 and FastT900 trying to compare.
> > We're currently running a F20 and close to running out of space on our
> > base.
> > Is it worth it to get an expansion for the F20 instead of getting the
> > FastT900?
> > Anyone out there know which is better? Any performance data would be
> > very appreciated.
> > Thanks in advance!
>
> As you've already got a F20, I would go with the expansion. You will
> have to learn another GUI for the FAStT.