Hi, I'm looking for some advice on my ceph cluster. The current setup is as follows: 3 mon servers 4 storage servers with the following spec: 1x Intel Xeon E5-2640 @2.50GHz 6 core (12 with hyperthreading). 64GB DDR3 RAM 2x SSDSC2BB080G4 for OS LSI MegaRAID 9260-16i with the following drives: 4 x SSDSC2CW240A3 SSD for OSD journals (5 OSD journals per SSD) 20 x Seagate ST4000NM0023 (3.5" 4TB SATA) The storage servers are 4U with 48 x 3.5" drive bays, which currently only contain 20 drives. I'm looking for the best way to populate these chassis more. >From what I've read about ceph requirements, I might not have the CPU power to add another 24 OSD's to each chassis, so I've been considering whether to RAID6 the OSD drives instead. Does anyone have any experience they can share with running OSD's on RAID6? Or can anyone comment on whether the CPU I have will cope with ~48 OSD's? This ceph cluster is being used for backups (windows and linux servers), so I'm not looking for "out of this world" speed, but obviously I don't want a snail either. Thanks for any help. J -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.ceph.com/pipermail/ceph-users-ceph.com/attachments/20140813/19d3b378/attachment.htm>
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