Re: STRDSKRGZ

At 03:14 AM 5/26/99 -0500, you wrote:
>Allen, Stuart wrote:

The CE will add the DASD (US statement on models 620 and higher) and it
will be non-configured.

Then you need to start RAID-5 on all DASD, and then add the non-configured
DASD to the ASP.  In the process of starting RAID-5 the system will do a
reasonable job of scattering the objects.  Adding this amount of DASD, I
wouldn't do more.

There is a DSKBAL command on V4R1 through V4R3 to balance disk utilization.
 (The command was added via PTF, so you may not have it.)  I have not used
it.  

There is a STRASPBAL command in V4R4 which I have tried, and it works
reasonably well.

I have never heard of a STRDSKRGZ command.

Al
>
>> We are due to upgrade a system from 50gb (70% util) non-raided, to 82gb
>with
>> 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.
>Regards
>Stuart



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