Re: Disk problem - need advice

One further point. Before you embark on a full restore, even if you have experience doing them, you might take the time to read the recovery manual. It will point out some things that are typically forgotten in the process that will make your experience better.

Think of it as a checklist similar to what pilots go through every time they start the engines, take off, prepare for landing, and actually land. They know the checklist dead on, but always use it, because they sometimes forget.......... (ask any pilot with retractable landing gear if they have gotten into very close final and had the tower call and ask if they intended to land on the wheels or the belly of the plane) Even the best forget sometimes.....

Replacing the load source drive might be another occasion to review the procedures first.

Jim Oberholtzer
CEO/Chief Technical Architect
Agile Technology Architects, LLC


On 4/4/2010 7:42 PM, DrFranken wrote:

*This message was transferred with a trial version of CommuniGate(r) Pro*
Rule one: Do SAVE 21 Now.
Rule two: DO NOT Power off with a failed load source disk.Even with RAID
it will not IPL

To answer your question you can do exactly as you say. Yes you will need
to move a new disk to the LS slot which is not slot one it's P2-D3 which
is the 3rd slot from the RIGHT side on a 520. You will also have to
format all the disks due to the failed RAID set then start RAID over.
With a failed LS disk there is no way to remove a drive from the ASP and
the replace the LS disk with that one. (Now I have not tried this since
V5R2 but it flat did NOT work then!)

Despite that there just has to be a used 4326 in Britain somewhere cheap
and that would absolutely be my first course of action!

- DrFranken

Hi,

I have an 9406-520 at V5R3 which I use for development and is not under maintenance. Disk unit 1 has failed but the system is still running as I have RAID5 setup. I have looked at eBay for a replacement disk but the only ones I can find are in the US and cost more in shipping than they do to buy and I would then have to add import duties and VAT.

The option I am looking at is backing up the system with GO SAVE option 21 , removing the failed disk and then restoring the system. I think I would also have to move one of the other disks to position 1 to replace the failed unit. Disk usage would still be at about 40% so I am not in desperate need to replace the failed disk. I would just like to get RAID5 active again on the remaining disks.

Does this sound reasonable? Is there anything else I should be doing apart from taking as many backups as I can?

Display Disk Configuration Status

Serial Resource
ASP Unit Number Type Model Name Status
1 Unprotected
1 21-440D0 4326 070 DD006 DPY/Failed
2 21-448A9 4326 074 DD003 DPY/Unprotected
3 21-44A87 4326 074 DD004 DPY/Unprotected
4 21-44B35 4326 070 DD007 DPY/Unprotected
5 21-44643 4326 074 DD005 DPY/Unprotected
6 21-3327B 4326 074 DD002 DPY/Unprotected
7 21-44E3A 4326 070 DD001 DPY/Unprotected





Regards,

Fred Mitchell

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