Hello, On Tue, 12 Jul 2016 19:14:14 +0200 (CEST) Wido den Hollander wrote:
> > > Op 12 juli 2016 om 15:31 schreef Ashley Merrick <ash...@amerrick.co.uk>: > > > > > > Hello, > > > > Looking at final stages of planning / setup for a CEPH Cluster. > > > > Per a Storage node looking @ > > > > 2 x SSD OS / Journal > > 10 x SATA Disk > > > > Will have a small Raid 1 Partition for the OS, however not sure if best to > > do: > > > > 5 x Journal Per a SSD > > Best solution. Will give you the most performance for the OSDs. RAID-1 will > just burn through cycles on the SSDs. > > SSDs don't fail that often. > What Wido wrote, but let us know what SSDs you're planning to use. Because the detailed version of that sentence should read: "Well known and tested DC level SSDs whose size/endurance levels are matched to the workload rarely fail, especially unexpected." > Wido > > > 10 x Journal on Raid 1 of two SSD's > > > > Is the "Performance" increase from splitting 5 Journal's on each SSD worth > > the "issue" caused when one SSD goes down? > > As always, assume at least a node being the failure domain you need to be able to handle. Christian > > Thanks, > > Ashley > > _______________________________________________ > > ceph-users mailing list > > ceph-users@lists.ceph.com > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > -- Christian Balzer Network/Systems Engineer ch...@gol.com Global OnLine Japan/Rakuten Communications http://www.gol.com/ _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
