ncc74656 :
my goal is to increase data speed, have a single controller that i can run raid-10 with on storage drives and have more esata ports. i run with 12 dedicated system drives between platter and SSD and routinely have up to 10 more drives hooked through USB and such doing viri removals or clones ect. so i want expand-ability, dependability and speed.
If I'm understanding this correctly, I'd like to point out 2 things
1. If you're ingesting via USB (or even a single eSATA), you don't need the array to be that fast. Your bottle neck is going to be the singular drive. Even if you had 10 USB drives working at once, you wouldn't need that speed you're thinking. Your board might have 10 physical USB3.0, but you only have 4 native channels. The 8 rear ports are shared and split via a hub from 2 native channels. And the 2 internal headers are 2 native channels. If you're backing up 8 drives simultaneously via those 8 rear ports, that hub is going to get very overworked, and you'll never come close to the performance of a 12drive RAID 10. In otherwords, in that worst case scenario (8 drives at once), the hub would get so over worked you'd get 1.33 - 1.66 channels' performance, not the full 2.
Therefore, you would get more available capacity and more stability if you go with a RAID 5 or 6, yet still never touch the maximum speed potential of the array.
2. If you want to expand later, you can't just "add" drives to the array without taking the whole thing down and rebuilding.
Therefore you'll need a place to put all this backup data (Tape, BluRay, DVD-Rs...) while you take it down and expand. Solutions like Drobo do work around this but would be just under the max speed of a complete ingest if my understanding in #1 above is correct.