On 15/05/14 11:36, Tyler Wilson wrote:
Hey All,
I am setting up a new storage cluster that absolutely must have the best
read/write sequential speed @ 128k and the highest IOps at 4k read/write
as possible.
My current specs for each storage node are currently;
CPU: 2x E5-2670V2
Motherboard: SM X9DRD-EF
OSD Disks: 20-30 Samsung 840 1TB
OSD Journal(s): 1-2 Micron RealSSD P320h
Network: 4x 10gb, Bridged
Memory: 32-96GB depending on need
Does anyone see any potential bottlenecks in the above specs? What kind
of improvements or configurations can we make on the OSD config side? We
are looking to run this with 2 replication.
Thanks for your guys assistance with this.
On thing that comes to mind is write endurance for the Samsung drives:
Samsung 840 Pro:
(http://www.samsung.com/us/pdf/memory-storage/840PRO_25_SATA_III_Spec.pdf)
For enterprise applications, 5 years limited warranty assumes a
maximum average workload
of 40GB/day (calculated based on host
writes and on the industry standard of 3-month data retention).
Workloads in excess of 40GB/day are not covered under warrant
Compare with
Intel DC3700
(http://www.intel.com/content/dam/www/public/us/en/documents/product-specifications/ssd-dc-s3700-spec.pdf)
10 drive writes per day for 5 years
I'm not trying to be an Intel sales guy here, but I'd be wary of using
the Samsung 840 for a (busy) server based workload - 40G of data churn
per day is not a great deal.
Regards
Mark
_______________________________________________
ceph-users mailing list
[email protected]
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
