> Putting the WAL on a second controller does help, if you're write-heavy.
>
> I tried separating indexes and data once on one server and didn't
> really notice that it helped much. Managing the space was problematic.
> I would suggest putting those together on a single RAID-10 of all the
> 300GB drives (minus a spare). It will probably outperform separate
> arrays most of the time, and be much easier to manage.
>
> --
>
>
I like to use RAID 1, and let LVM do the striping. That way I can add
more drives later too.
