Please excuse me coming into this conversation late.<br><br>First, I'm using negligible space now, but I will eventually use more.<br><br><br>Regarding RAID. If the controller dies there is some risk data will be corrupted. How much, I don't know. Certainly any failure not related to the drives risk corruption or destruction of the data on ALL of the drives (think power supply failure and spike).<br>
<br>MTBF of HDDs is, I think, fairly high between years 2 and 5.<br><br>This is my understanding: software RAID5 is a performance hit while RAID1 is negligible.<br><br>I suspect the cost of "rebuilding" software based RAID is the same: high enough for RAID5 to affect performance, low enough for RAID1 to run comfortably in the background.<br>
<br>
A good, well supported hardware RAID5 card is expensive.<br><br>I currently use hardware RAID5 on my "home" desktop. But my next machine will probably be RAID1+0. To save money.<br><br><br>-- <br>Scott Bailey<br>