setting up raid10 with more than 4 drives - Mailing list pgsql-performance

hi,

this is not really postgresql specific, but any help is appreciated.
i have read more spindles the better it is for IO performance.

suppose i have 8 drives , should a stripe (raid0) be created on
2 mirrors (raid1) of 4 drives each OR  should a stripe on 4 mirrors
of 2 drives each be created  ?

also does single channel  or dual channel controllers makes lot
of difference in raid10 performance ?

regds
mallah.