I've never done any test comparing STORAGE vs. XSTORAGE for MDC. I suspect
that "it depends". I would guess that a deciding factor is whether or not
you can sometimes use main storage for other things than MDC. If your
application requirements are such that in the day time, you're doing a lot
of I/O that benefits from MDC but at night, you don't get any or much
improvement from MDC because your requirements have changed, you may be
better of letting MDC use more MAIN that XSTORAGE. If you can benefit from
MDC 7x24, then you're probably better off leaving MDC in XSTORAGE.
Just a guess because as I said above, I haven't tested it. I've been lucky
to not have to do that much tweaking for quite a while.
Jim
At 11:06 AM 7/12/2006, you wrote:
Hello Jim,
Guess what. We just doubled our CPU. That is why I can
actually see
a change. Before I would run at 100% from 5:30 am on Monday morning
until=20
about 3:30 pm on Thursday afternoon.
We went from a MP3000 H50 to a z890-160. =20
=09
Now we are planning on a better I/O system.
Each bottle neck removed just moves the bottle neck.
And we had LOTS of latent demand.
ON WARD WITH TUNING.
Another question, is MDC better with STORAGE or XSTORAGE?
=09
Ed Martin=20
Aultman Health Foundation
330-588-4723
[EMAIL PROTECTED]
ext. 40441
Jim Bohnsack
Cornell Univ.
(607) 255-1760
