On 1/21/09 5:09 PM, "Mark Post" <[email protected]> wrote:

>>>> On 1/21/2009 at  2:31 PM, David Boyes <[email protected]> wrote:
> -snip-
>> If I haven't said it before, I don't think there's much reason to ever
>> consider LPAR deployment of Linux, but others do disagree with that view.
>> I'm sure there are workloads where it would matter, but I still think the
>> manageability loss dramatically overwhelms any cost advantage from omitting
>> VM.
>
> When I first joined Novell, I was surprised to learn that the world's largest
> implementation was done all in LPARs.  From what I was told, that wasn't
> because of the dollar cost of z/VM, but the overhead.  Given the number of
> processors running, I could (somewhat) understand that, but to me that says
> that "people time is free" is the attitude, and that leads to another whole
> set of problems.

True enough. There's always exceptions, but they are just that: exceptions.
Right tool, right job, and LPAR is only rarely the right tool to make Linux
on Z interesting.

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