I found it!

http://www.redbooks.ibm.com/redpapers/pdfs/redp4362.pdf

Actually a fairly fun read.  Way cool technology.  I'm sure it will show up in 
the pSeries soon anyway so the hardware issues become further blurred.

Kelly Lipp
Chief Technical Officer
www.storserver.com
719-266-8777 x7105
STORServer solves your data backup challenges. 
Once and for all.


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Paul Zarnowski
Sent: Friday, October 23, 2009 12:43 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Performance and migration: AIX vs Linux

Kelly,

At 11:27 AM 10/23/2009, Kelly Lipp wrote:
>If one reads the IBM documentation on the latest x3850/x3950 M2 one will 
>observe that the data paths within that architecture are actually faster than 
>in the latest pSeries hardware.

I'm curious - does your analysis include the number of busses available?  I 
know that the pSeries has quite a lot of busses to drive all of its adapters.  
I'm not as familiar with the xSeries, so I don't know if there is a model 
available that has a comparable number of busses.  It's not just the speed, 
it's the overall throughput that most concerns me.  Sure, I could have more 
smaller xSeries servers, but then I would have more resource baskets to manage.

Thanks for sharing.
..Paul



--
Paul Zarnowski                            Ph: 607-255-4757
Manager, Storage Services                 Fx: 607-255-8521
719 Rhodes Hall, Ithaca, NY 14853-3801    Em: psz1 AT cornell DOT edu