Re: Consumer Grade SSD Clusters

[Wido den Hollander <wido@xxxxxxxx>]

Op 24 jan. 2015 om 10:13 heeft Quenten Grasso <qgrasso@xxxxxxxxxx> het volgende geschreven:

Hi Everyone,

 

Just wondering if anyone has had any experience in using consumer grade SSD’s for a Ceph cluster?

 

I came across this article http://techreport.com/review/26523/the-ssd-endurance-experiment-casualties-on-the-way-to-a-petabyte/3

 

They have been testing different SSD’s write endurance and they have been able to write up to 1PB+ to a Samsung 840 Pro 256GB which is only “rated” at 150TBW and of course other SSD’s have failed well before 1PBW, So defiantly worth a read.

 

So I’ve been thinking about using consumer grade SSD’s for OSD’s and Enterprise SSD’s for journals.

 

Reasoning is enterprise SSD’s are a lot faster at journaling then consumer grade drives plus this would effectively half the overall write requirements on the consumer grade disks.

 

This also could be a cost effective alternative to using enterprise SSD’s as OSD’s however it seems if your happy to use 2 x replication it’s a pretty good cost saving however 3x replication not so much.

 

Why not mix different vendors? Samsung, SanDisk and Intel for example.

Use crush to place replicas on different vendors.

Wido

Cheers,

Quenten Grasso

 

_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com