Re: [ceph-users] 1 x raid0 or 2 x disk

2013-07-21 Thread Mikaël Cluseau
On 07/21/13 20:37, Wido den Hollander wrote: I'd saw two disks and not raid0. Since when you are doing parallel I/O both disks can be doing something completely different. Completely agree, Ceph is already doing the stripping :) ___ ceph-users mailin

Re: [ceph-users] 1 x raid0 or 2 x disk

2013-07-21 Thread Wido den Hollander
Hi, On 07/21/2013 07:20 AM, James Harper wrote: I have a server with 2 x 2TB disks. For performance, is it better to combine them as a single OSD backed by RAID0 or have 2 OSD's backed by a single disk? (log will be on SSD in either case). I'd saw two disks and not raid0. Since when you are

[ceph-users] 1 x raid0 or 2 x disk

2013-07-21 Thread James Harper
I have a server with 2 x 2TB disks. For performance, is it better to combine them as a single OSD backed by RAID0 or have 2 OSD's backed by a single disk? (log will be on SSD in either case). My need in performance is more IOPS than overall throughput (maybe that's a universal thing? :) Thanks