• Subject: STRDSKRGZ
  • From: "Allen, Stuart" <sallen@xxxxxxxxxxxx>
  • Date: Wed, 26 May 1999 03:14:32 -0500

Allen, Stuart wrote:

> We are due to upgrade a system from 50gb (70% util) non-raided, to 82gb
> raid 5.
> Can anyone tell me how the actual upgrade will work - will the machine
> re-allocate the storage over the new dasd arms & create the parity
> information during IPL, or is there anything else that needs to be done?
> Any ideas as to how long this will take if so?

OK, have done the upgrade, and after ten days use the new disk arms are at
24%, with the old at 54%.
Billy mentioned that V4R3 and up of os/400 have a disk balance command, but
we're on V4R2.
However i heard somewhere that this had been available since V4R1, so did a
bit of digging on the commands, and came across STRDSKRGZ in the CL
reference manual.
This seems to be like a defrag on a pc.
My question is  1) Will this balance my disk load when it runs ?
                2) Is it a good idea to run this command?  I'm a bit
confused as to what exactly it does in a raid environment!

Any help would be appreciated.

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