RE: Who is your go to person for virtual disks?

How big are your virtual drives? Reason for the question is I recently ran into an issue with STRASPBAL *MOVDTA while preparing for a disk migration. Normally the drives go down to less than 1% but in this case they would not go below 10%. IBM Support finally identified the issue as STRASPBAL only support drives up to 500GB. In this case the customer was using 775GB SSDs. Could this be contributing to your issue?



From: Rob Berendt<mailto:rob@xxxxxxxxx>
Sent: Monday, March 23, 2020 8:34 AM
To: Midrange Systems Technical Discussion<mailto:midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: Who is your go to person for virtual disks?

Mine used to be Sue Baker but she retired.
I pointed out in a case that I have opened that STRASPBAL *USAGE is not supported on virtual disks and pointed them to this link to back it up:

They replied that the information was from 2009 and therefore worthless.
They said that the TRCASPBAL must have shown little to no difference in usage so the STRASPBAL would have ended ONLY because of that.
I said that the IBM Performance team was on my system and said I needed to do this because the disks were out of balance.
They replied that the system must have balanced itself in the time between the IBM performance teams analysis and the TRCASPBAL.



Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
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