Re: Advice sought : new database server - Mailing list pgsql-performance

From Steve Crawford
Subject Re: Advice sought : new database server
Date
Msg-id 4F56AC9E.1090500@pinpointresearch.com
Whole thread Raw
In response to Re: Advice sought : new database server  (Michael Friedl <linux@nicce.at>)
List pgsql-performance
On 03/04/2012 03:50 AM, Michael Friedl wrote:
> Hey!
>
> On 04.03.2012 10:58, Rory Campbell-Lange wrote:
>>      1U chassis with 8 2.5" disk bays
>>      2x Intel Xeon E5630 Quad-Core / 4x 2.53GHz / 12MB cache
>>      8 channel Areca ARC-1880i (PCI Express x8 card)
>>        presumably with BBU (can't see it listed at present)
>>      2 x 300GB SAS  2.5" disks for operating system
>>        (Possibly also 300GB SATA VelociRaptor/10K RPM/32MB cache
>>        RAID 1
>>      4 x 300GB SAS  2.5" storage disks
>>        RAID 10
>>      48.0GB DDR3 1333MHz registered ECC (12x 4.0GB modules)
>>
> Sorry, no answer for your question and a bit offtopic.
>
>
> Why do you take SAS disks for the OS and not much cheaper SATA ones?
>
>
>

Here's Intel's (very general) take. Your OS disks may not justify SAS on
performance alone but other aspects may sway you.
http://www.intel.com/support/motherboards/server/sb/CS-031831.htm

Cheers,
Steve

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