Quote Originally Posted by gtj
Yep the 4 ports can be mixed and matched. 2 arrays works just fine.

If you want to be scientific about the choice of 2x250 or 1x500, look at the failure rate of the drives. Since a RAID 0 has no redundency, a failure of EITHER 250 will cause a total data loss. So unless the 250's are twice as reliable as the 500 (not!) then stick with the single 500. The performance difference for storage and playback of music and video between the 2x250 and the 1x500 will be negligible. Now 2x500 in a RAID 1 will get you redundency and read performance with a slight cost of write performance.
hmm. ok. if i did 1x500 now, can i add another later on & convert to raid-1?
i know its a no-go for raid-0. not sure on R-1.

thanks.