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RE: Failed disk in a 9406-170



fixed

On Sat, 28 Jun 2014, Porterfield, Sean wrote:

You may have already solved this by now, but the Backup and Recovery manual has that sort of thing.
http://publib.boulder.ibm.com/iseries/v5r2/ic2924/books/c4153046.pdf
See PDF page 86.
--
Sean Porterfield

I've been reading exactly that manual. As I look at the tables on that page it looks to me like I need to use checklist 15 as that seems to match my situation of device parity protection active and no data loss. Unfortunately that checklist says that tasks 1 and 2 are done by the service represetative, which won't be coming in our case since there is no maintenance agreement. So I need to do task 1: attach the new disk unit and task 2: rebuild the failed device parity disk unit data. I've been reading the section on device parity protection and so far haven't found anything on rebuilding the failed device parity disk unit data.

I have found this maidrange post interesting: http://archive.midrange.com/midrange-l/200610/msg00754.html

It mentions concurrent maintenance, but I haven't found what that is in any manuals yet. Do I leave the failing disk unit in the machine and add the new disk, or do I remove the failing unit from DPY, then remove it from the machine, then add the new disk, then add the new disk to DPY?

Note to Mark S Waterbury:
I tried to respond to your message but it looks like bellsouth blocks my mail server despite it not appearing on any blacklists.

________________________________________
From: James Rich
Sent: Friday, June 27, 2014 15:31
To: midrange-l
Subject: Failed disk in a 9406-170

I have a customer that has a failing disk in a 9406-170 running v5r2. The
exact message is:

CPP1604 *Attention* Impending DASD failure. Contact your hardware
service provider now.
Cause . . . . . : Internal measurements on disk device DD001 indicate
that an unrecoverable error resulting in data loss is about to occur.
Recovery . . . : Contact your hardware service provider to have failing
item 59H6611 service.

We would normally have IBM handle this but this customer doesn't have
hardware support and isn't about to start. So I'm doing this myself for
the first time. The new drive has arrived and a GO SAVE 21 is nearly
complete. There are a total of 4 disks in a RAID 5 configuration. I've
been looking for instructions on how to do this but haven't found them
yet. Can anyone point me to the correct documentation or give me the
steps to follow?

James Rich


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James Rich

if you want to understand why that is, there are many good books on
the design of operating systems. please pass them along to redmond
when you're done reading them :)
- Paul Davis on ardour-dev





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