Ron,

You need to attach a terminal (700/92) with the appropriate cable to the
service port(s) on the array. The terminal has to be set to the proper
emulation (VT100?). Then you can access the array and view/change the RAID
mode.

A simple check is to compare the size of your disk LDEVs to the size of the
disk modules in the array. RAID-1 would yield one 18GB LDEV if two 18GB
physical drives were bound together. RAID-5 would yield a ~54GB LDEV if four
18GB physical drives were bound together.

Use RAID-1 for any "production" data, as you will pay a big performance hit
with RAID-5.

I agree with the comments about an I/O problem hiding behind a CPU problem,
especially now that you are running more, faster CPUs.

Regards,

>       _________________________________________
>
>       Rocky J. Costantino
>       Vice President
>
>       Computer Design & Integration, LLC
>       696 Route 46 West
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-----Original Message-----
From: Ron Wallace [mailto:[log in to unmask]]
Sent: Friday, April 07, 2000 1:57 PM
Subject: 989/400 I/O


When I installed the two 18 gig drives I get 36 gig (or close to that) added
to system.  I think the other drives may be configured as RAID.  How do I
tell?

Thanks
Ron Wallace