On 12 March 2013 21:59, John R Pierce <pie...@hogranch.com> wrote: > On 3/12/2013 2:31 PM, Gregg Jaskiewicz wrote: > >> I was basically under impression that separating WAL is a big plus. On >> top of that, having separate partition to hold some other data - will do >> too. >> But it sounds - from what you said - like having all in single logical >> drive will work, because raid card will spread the load amongst number of >> drives. >> Am I understanding that correctly ? >> >> > both those models have merits. > > doing a single raid 10 should fairly evenly distribute the IO workload > given adequate concurrency, and suitable stripe size and alignment. > there are scenarios where a hand tuned spindle layout can be more > efficient, but there's also the possibility of getting write bound on any > one of those 3 seperate raid1's, and having other disks sitting idle.
I'm trying to get an understanding of all options. So out of 6 disks then having 4 in Raid 1+0 configuration and other two in mirror for WAL. That's another option then for me to test.
