I concur with Bill because I have a real life example that happened to us.
We had to relocate our UPS and power distribution equipment. We had to power
down everything for four hours. One of the older 2GB drives would not come
back. Had to get it replaced and reload the volume set. Not the way I wanted
to spend my Sunday. We had absolutely no reason to suspect that drive
beforehand.

John Burke

-----Original Message-----
From: HP-3000 Systems Discussion [mailto:[log in to unmask]]On
Behalf Of Bill Lancaster
Sent: Wednesday, December 15, 1999 4:01 PM
To: [log in to unmask]
Subject: Re: SPU Plans for Rollover


Marti,

I'm glad you brought this up.  I would strongly recommend *against*
shutting down the hardware, especially if you have any older disks on the
system.  There is some anecdotal evidence (an oxymoron?) that the older
disk platters tend to get somewhat sticky once you turn them off after
having them on for a long time. I think that it makes sense to close down
applications but leave all the hardware up and running.

Bill Lancaster

At 03:48 PM 12/15/1999 -0800, Marti Jarsey wrote:
>Dear Listers,
>
>We are a manufacturing site and have put together our end of the
>year/rollover plan.  There is one issue which seems to be open to debate:
>whether or not to power off the 3K and 9K SPUs during the rollover.  My
>preference is to shut down applications but leave the hardware and OS
>running.
>
>Any thoughts on the pros/cons of leaving the systems up?  What are your
>sites planning?