Mark Landin wrote after Me:

>>Bill,
>>
>>I have a 957RX running on the Nike array, HP3550A. You can create a
ldev
>>1 out of a mirrored pair RAID 1, and the rest can be groups of RAID 5.
>>This has worked very well for us. Recently we had a drive fail. It
>>worked perfectly. I got hold of a replacement, swapped the drives and
>>about 3 hours later we were redundant again. Everything was working
the
>>whole time. You can pick up a used Nike array with drives in the $10K
to
>>$20K region.

>Buy yourself one more disk mech as a hot spare and you can be
>redundant even BEFORE you get a chance to swap out the failed mech.

Did that. When one failed, I bought two. Actually as warm spare since
the array is full.

>Can anyone confirm or deny that MPE/iX 6.0 supports the auto-trespass
>feature (which in the case of an array with two storage processors,
>allows all physical disks to be accessed by only one SP in case the
>other fails. Right now the admin must go into the disk array and force
>this to happen during failures, but HP-UX systems, for instance, can
>be configured to do this automatically. It's really the last barrier
>to MPE/iX having a really bulletproof HP disk array solution.......)

I don't think so. I searched the HPESC and found no reference to this in
any Mpe iX document. But you're right, this is the last barrier to
bulletproof disk array.

John Zoltak
North American Mfg Co