+1 for 18TB and all SSD - If you need any decent IOPS with a cluster this size then I all SSDs are the way to go. On Mon, Jun 27, 2016 at 11:47 AM, David <dclistslinux@xxxxxxxxx> wrote: > Yes you should definitely create different pools for different HDD types. > Another decision you need to make is whether you want dedicated nodes for > SSD or want to mix them in the same node. You need to ensure you have > sufficient CPU and fat enough network links to get the most out of your > SSD's. > > You can add multiple data pools to Cephfs so if you can identify the hot and > cold data in your dataset you could do "manual" tiering as an alternative to > using a cache tier. > > 18TB is a relatively small capacity, have you considered an all-SSD cluster? > > On Sun, Jun 26, 2016 at 10:18 AM, EM - SC <eyal.marantenboim@xxxxxxxxxxxx> > wrote: >> >> Hi, >> >> I'm new to ceph and in the mailing list, so hello all! >> >> I'm testing ceph and the plan is to migrate our current 18TB storage >> (zfs/nfs) to ceph. This will be using CephFS and mounted in our backend >> application. >> We are also planning on using virtualisation (opennebula) with rbd for >> images and, if it makes sense, use rbd for our oracle server. >> >> My question is about pools. >> For what I read, I should create different pools for different HD speed >> (SAS, SSD, etc). >> - What else should I consider for creating pools? >> - should I create different pools for rbd, cephfs, etc? >> >> thanks in advanced, >> em >> >> _______________________________________________ >> 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 > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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