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 -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
