On Fri, Mar 16, 2012 at 12:52:19AM +0800, Jessie Evangelista wrote:
> Hi keld,
> On Thu, Mar 15, 2012 at 11:25 PM, <keld@xxxxxxxxxx> wrote:
> > On Thu, Mar 15, 2012 at 02:07:25PM +0000, Peter Grandi wrote:
> >> >>> I want to create a raid10,n2 using 3 1TB SATA drives.
> >> >>> I want to create an xfs filesystem on top of it. The
> >> >>> filesystem will be used as NFS/Samba storage.
> >> Consider also an 'o2' layout (it is probably the same thing for a
> >> 3 drive RAID10) or even a RAID5, as 3 drives and this usage seems
> >> one of the few cases where RAID5 may be plausible.
> > Well, for a file server like NFS/Samba, you could also consider raid10,f2.
> > I would think you could get about double the read performance compared to
> > n2 and o2
> > layouts, and also for individual read transfers on a running system
> > you would get somthing like double the read performance.
> > Write performance could be somewhat slower (0 to 10 %) bot as users
> > are not waiting for writes to complete, they will probably not notice.
> I also plan to try raid10f2. Did you do your own benchmarks or are you
> quoting someone elses?
Both, look at our wiki: