I have RAID 5 right now. Works fine I have NVRAM to protect the cache. However it crossed my mind recently that I can in fact switch to a RAID 0 and use Time Machine to back everything up. Is this a wise choice? The Time Machine would be 2x1.5TB drives in RAID 1. The RAID for my internal drives would be 4 drives. The throughput (at least sequentially would be excellent). Only drawback is the rebuild one failure and I have to restore everything (which can take a while). Should I go with this set up? I'm not doing RAID 10 or RAID 6. It's just between keeping RAID 5 or going with RAID 0 and backup via Time Machine.