RE: small i & power systems (disk performance)

["Pete Massiello" <pmassiello-ml@xxxxxxxxxxxx>]

The M25 will support the 8 SAS drives in the CAC AND the additional 12 SAS
drives in the 12S expansion disk draw.  It doesn't matter if you have one or
two processors turned on.  

The M15 will only support the 8 SAS drives in the CEC.

Pete

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Kirk Goins
Sent: Thursday, April 24, 2008 5:08 PM
To: Midrange Systems Technical Discussion
Subject: Re: small i & power systems (disk performance)

Keith Carpenter wrote:
> running our end of month processing.
>
> The BP has collected performance data and suggested 12x 4327 in CEC and 
> 5095 w/5583 (5777 w/cache).  I've asked for more details on the analysis.
>
>   
The 525 will only do 8 drives in the CEC (CPU) so I'm guessing that they 
are suggesting 4 in the CEC with Raid5 and 8 in the 0595 or 2 mirrored 
in the CEC and 10 in the 0595. either way the bulk of the disk space is 
outside the CEC.

The M25 only uses SAS drives in the CEC and you need a dual core model 
to support the SAS Expansion unit. You could do 4 SAS drives in the CEC 
and 8 SCSI (4327s) in the 0595. In any case the drives and controllers 
will way out perform you old stuff :)