Paul,

Yes, the bus structures are similar and in the x M2 variants faster.  I just 
attempted to lay my hands on a the technical paper I read about this to no 
avail and I'm struggling to recreate the search I used to find it originally.  
When I went after that is was my intent to confirm that the overall bus 
structures were indeed similar and that is what I found.

I'll try to find that document again and post it when I do.

Thanks,

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