>>> On 1/29/2009 at  7:18 AM, **** **** <[email protected]> wrote: 
-snip-
> 1.       Many Many device addresses*

Not really.  You shouldn't need more than 5 or 6GB for the operating system 
itself.  If you have requirements for large application file spaces, then go 
with SCSI over FCP.  One thing you _don't_ want to do is have hundreds of DASD 
volumes making up an LVM volume group.  LVM startup and commands get 
reaaaaaallly slow if you do that.

You are right that you want to avoid having multiple Linux guests trying to do 
I/O to the same z/VM RDEV, if you don't want to set up either static or dynamic 
PAV.  For that reason, I think a 3390-9 for the OS would be a reasonable 
approach.


Mark Post

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