Re: Size/number of guested storage spaces

[Evan Harris <auctionitis@xxxxxxxxx>]

Can't comment on the minimum; I guessed that was the minimum you
*could* create but obviously not usable for a load source disk.

The comment regarding the disk configuration makes sense; if you are
seeing high disk activity on the hosting partition before creating a
guest then poor performance on the guest would be virtually assured.

In my case the customer wanted 1.4 terabytes so I created 20 X 70Gb
disk and spread them across two virtual scsi connections (8 each). So
far it looks pretty good. I might have considered carving out a second
asp with 10 X 140 disk on the host if the ASP recommendation had been
in the mix, but in terms of performance it looks OK so far.


On Tue, May 22, 2012 at 7:41 AM,  <rob@xxxxxxxxx> wrote:
> The first link
> http://www-03.ibm.com/systems/resources/systems_i_Virtualization_Open_Storage.pdf
> mentions that the minimum size is 160MB (NOT GB).  Does load source size
> not matter?  Maximum number of storage spaces is 16 (but talks about how
> to work around that).  Also mentions the rule of thumb of 6 to 8 storage
> spaces per lpar.
> But in italics "the best way to ensure good disk performance in the client
> LPAR is to create a well-performing disk configuration in the host LPAR"
>
>
> Rob Berendt
> --
> IBM Certified System Administrator - IBM i 6.1
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