Re: HMC remove RAM from IBM i - no change

Not a big deal but I'm quite sure it moves FROM *MACHINE to *MACHINE. Nonetheless we fought this problem recently on POWER8 machine where the firmware was not up to date.

We found we could ADD memory and we could remove SMALL amounts (e.g. 4 or 8 GB once but removing a second amount or removing say 32 GB (of 192GB in the lPAR) would fail.

- L

On 3/31/2021 4:57 PM, Steinmetz, Paul via MIDRANGE-L wrote:

This was years ago, but when moving ram from one LPAR to another, first you had to ensure the ram was moved to *BASE on the source LPAR. RAM is only moved from *BASE to *BASE.

Paul

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From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Evan Harris
Sent: Wednesday, March 31, 2021 4:46 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: HMC remove RAM from IBM i - no change

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Hi Holger

this can be a slow operation - what timeout length are you using ?

I found I often needed to add a longer timeout on an active LPAR to give the HMC time to remove the memory and move it.

On Thu, Apr 1, 2021 at 9:23 AM Holger Scherer <hs@xxxxxxx> wrote:

Hi *all,

i ran into a S814 with a HMC 9.1 with the following symptoms:
* i on i hosted
* i can *add* RAM to a LPAR (as long as there is unused RAM)
* but i cannot remove RAM from any LPAR (different releases V7R2 ..
V7R4)

I remember someone had this kind of issue and wrote about it, but my
google tries to hide this information from me :)

Anyone had this issue, too? Or need to peek IBM for the solution?

-h


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Regards
Evan Harris
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