No - that's not true...   Linux doesn't care about 3390 model numbers -- it
takes the cylinders it's given and is happy.

The reason that I would define Mod27's as 30050 cylinders (actually 30049)
Is so that 3 3390-9 size minidisks (10016 cylinders) will fit perfectly.
(so:  3x10016 = 30048 + 1 for cylinder 0 )

That's the only plausible reason I see for picking that particular number...

Scott

On Wed, Feb 10, 2010 at 9:51 AM, Martin, Terry R. (CMS/CTR) (CTR) <
[email protected]> wrote:

>   Hi
>
>
>
> I know that there are 32,760 cylinders for a 3390 MOD27. But thus far I
> have been carving my MOD27s on my DS8100 as max. cylinders of 30050 for my
> REL z/Linux guests. I was told that for z/Linux (I am running REL4 and 5)
> that 30050 is the max cylinders it would recognize for a MOD27 is this
> correct?
>
>
>
> *Thank You,*
>
> * *
>
> *Terry Martin*
>
> *Lockheed Martin - Citic*
>
> *z/OS and z/VM Performance Tuning and Operating Systems Support*
>
> *Office - 443 348-2102*
>
> *Cell - 443 632-4191*
>
>
>

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