I did it on a 270: from 6 x 17gb to 6 x 35gb with raid at 86% usage. The first advice was to stop raid and eliminate the last disk and add the new one and so on. At the end start again raid. Estimated time a full day plus saving time.
So I did a full save and a SAVSTG and then I replaced ALL the disks and did a RSTSTG. See Backup and recoery guide, it's all well documented. The only problem was with TAP01 *DEDV, on the "NEW" machine it became TAP02. Don't ask me why, probably because was allocated during the save.
HTH
Marco
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Original Message:
From: lgoodbar@xxxxxxxxxxxxxx
To: midrange-l@xxxxxxxxxxxx
Cc:
Date: Wednesday, July 2 2008 07:31 PM
Subject: DASD swap on 810?
We are in the high 80% range, and I am exploring options to replace the
current drives in our 9406/810. Currently, all 6 slots are occupied with
35GB (model 4326) disk units, under RAID parity protection. I'd like to
replace them with 70GB units.
I know we can break the RAID, offload a drive, and remove for a larger
unit. Can this be done while the system is active (i.e. not restricted
state or DST)? We've done concurrent maintenance for drive replacements,
but am unsure for this type of swap. Obviously we would do a full system
save before and after this operation.
How is the load source handled in this scenario?
Since we have so little free space, we would need to swap one drive,
then another. The third round we should be able to swap two drives, then
two more.
Advice and RTMs appreciated.
Loyd Goodbar
Business Systems
BorgWarner Shared Services
662-473-5713
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