On Thu, Apr 3, 2014 at 1:44 PM, Brent Wood <brent.w...@niwa.co.nz> wrote: > > Hi David, > > Does the RAID 1 array give any performance benefits over a single drive? I'd > guess that writes may be slower, reads may be faster (if balanced) but data > security is improved.
I did some testing on machines with 3xMLC FusionIO Drive2s with 1.2TB. Comparing 1 drive and 2 drives in RAID-1 the difference in performance was minimal. However, a 3 drive mirror was noticeably slower. This was all with ubuntu 12.04 using 3.8.latest kernel and software RAID. RAID-0 was by far the fastest, about 30% faster than either a single or a pair of drives in RAID-1 -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
