> Op 24 jan. 2015 om 10:13 heeft Quenten Grasso <qgra...@onq.com.au> 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@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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