Nancy....

Have you looked at a couple of IBM 9133-55A (Power 5+)?? We have about
2.5TB of change data per day using an IBM 3584-L32 w/3-D32s, fourteen
LTO3 tape drives, 1600 LTO3 tapes and about 130TB of data on-site and
130TB of data off-site.  200GB DB size and 3.5TB of disk cache on IBM
DS4800 15K RPM w/IBM SVC system using RAID-5 configuration.

BTW, we always view TSM performance as being sensitive to disk speed and
a lot of memory.

My two cents>>>>>

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Nancy R. Brizuela
Sent: Monday, June 16, 2008 5:21 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] IBM p 520 vs. p 570

I'm sorry--I forgot to add some additional information.  Our p-570 has
four 1.9GHz CPU's (Power 5+) vs. two 4.2 GHz CPU's (Power 6) for the
p-520.  

> _____________________________________________ 
> From:         Nancy R. Brizuela  
> Sent: Monday, June 16, 2008 4:04 PM
> To:   ADSM-L AT VM.MARIST DOT EDU
> Subject:      IBM p 520 vs. p 570
> 
> Hi All,
> 
> We are thinking of replacing our IBM p 570 with a p 520.  This server
> would be used exclusively for TSM backups.  We back up about 1.5 TB
> every night.  We have two tape libraries, one about 50 miles from here
> and one locally, where we send all the backup data (about 66 TB
> total).  We have 8 tape drives locally and 5 tape drives at the remote
> library.  Our database and storage pools are on our SAN.  
> 
> What do folks think about the p 570 performance vs. the p 520--better
> or worse?  Has anyone made this same switch or is anyone using a p
> 520?  If so, how are things going?  What's your environment look like?
> 
> Thanks!
> 
> Nancy Brizuela, CPA
> Systems Programmer, Senior
> University of Wyoming
> IBM/Unix Systems Group
> Ivinson Room 238
> (307)766-2958
> 
>