Nick Fisk <nick@...> writes: > My Ceph cluster comprises of 4 Nodes each with the following:- > 10x 3TB WD Red Pro disks - EC pool k=3 m=3 (7200rpm) > 2x S3700 100GB SSD's (20k Write IOPs) for HDD Journals > 1x S3700 400GB SSD (35k Write IOPs) for cache tier - 3x replica If I have following 4x node config: 2x S3700 200GB SSD's 4x 4TB HDDs What config to aim for to optimize RBD write/read OPs: 1x S3700 200GB SSD for 4x journals 1x S3700 200GB cache tier 4x 4TB HDD OSD disk or: 2x S3700 200GB SSD for 2x journals 4x 4TB HDD OSD disk or: 2x S3700 200GB cache tier 4x 4TB HDD OSD disk /Steffen _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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