Thanks Florent On Mon, Feb 2, 2015 at 11:26 PM, Florent MONTHEL <fmonthel@xxxxxxxxxxxxx> wrote: > Hi, > > Writes will be distributed every 4MB (size of IMAGEV1 RBD object) > IMAGEV2 not fully supported on KRBD (but you can customize size of object > and striping) > > You need to take : > - SSD SATA 6gbits > - or SSD SAS 12gbits (more expensive) > > > > Florent Monthel > > > > > > Le 2 févr. 2015 à 18:29, mad Engineer <themadengin33r@xxxxxxxxx> a écrit : > > Thanks Florent, > can ceph distribute write to multiple hosts? > > On Mon, Feb 2, 2015 at 10:17 PM, Florent MONTHEL <fmonthel@xxxxxxxxxxxxx> > wrote: > > Hi Mad > > 3Gbps so you will have SSD Sata ? > I think you should take 6Gbps controllers to make sure so not have Sata > limitations > Thanks > > Sent from my iPhone > > On 2 févr. 2015, at 09:27, mad Engineer <themadengin33r@xxxxxxxxx> wrote: > > I am trying to create a 5 node cluster using 1 Tb SSD disks with 2 OSD > on each server.Each server will have 10G NIC. > SSD disks are of good quality and as per label it can support ~300 MBps > > What are the limiting factor that prevents from utilizing full speed > of SSD disks? > > Disk controllers are 3 Gbps,so if i am not wrong this is the maximum > i can achieve per host.Can ceph distribute write parallely and over > come this limit of 3Gbps controller and thus fully utilize the > capability of ssd disks. > > I have a working 3 node ceph setup deployed using ceph-deploy using > latest firefly and 3.16 kernel but this is on low quality SATA disks > and i am planning to upgrade to ssd > > can some one please help me in understanding this better. > > Thanks > _______________________________________________ > 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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