Yeah the speed is a HUGE plus, the way it works is that each file is writen across each drive in the same ammount. The problem with doing it this way is 2 fold as most have already said, the stability is not good, but if your only running home apps you risk a HDD Crash anyway, second if your dealing with MANY small files, your drive will still use the same amount of space with a 1kb file as it will with a bigger (around 64k mostly) file. You can change this size with most RAID controlers, but some you cannot. On the plus side tho, My 4 way RAID 0 WDSE100JB drives were performing around 3x the speed of a 15000RPM pro SCSI drive. That makes moving things around, and just the basic use of the drive SUPER easy. Also if your into DV editing you will really love how the drives give you that extra boost when recording things.
I wouldn't recomend using it as a primary drive tho (as in a Boot partition) because everytime you go to wipe your system you will need to boot the RAID Drivers along with your CD Rom, its not THAT hard, but it is an annoyance.
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