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.

John Zoltak
North American Mfg Co

-----Original Message-----
From: bill grefe [mailto:[log in to unmask]]
Sent: Wednesday, February 03, 1999 11:44 AM
To: [log in to unmask]
Subject: [HP3000-L] Disks!, Raid? Mirroring?


After yesterday's long ordeal with a flaky (technical term) 2gb disc
drive
(ldev 1 no less) I would
like to know this learned group's opinion on how best to insure against
data
loss (and down time)
for the loss of a disc drive.  (Friday's backup failed to verify 28,000
files and the drive failed during
the Monday night backup. Murphy was at work.)

Raid? Mirroring? Jamaica? Nike? What are they?

What are the pros and cons?

My environment is a 957RX with 8 - 2 gb drives (C2490) in one (long
volume
name) volume
20 or so image users and 40 resource sharing users.

Least cost and simplicity would be the operative design goals.

My thanks to the HP CE for trying ALL the options to recover the data
(which
luckily he did) and
Pete Crosby at the response center for the quick, accurate and thorough
look
of the dump.

William Grefe
[log in to unmask]
PCI-WEDECO Environmental Technologies, Inc.
phone: 973-575-7052
fax: 973-575-8941

"When a man sits with a pretty girl for an hour, it seems like a
minute,"
explained Albert Einstein.  "But let him sit on a hot stove for a
minute,
and it's longer than any hour. That's relativity."