RAID-0 Performance versus 2x failure percentage

[NorthWoodsman]

Is running RAID-0 worth the (doubled) chance of data loss in terms of performance? I can't seem to find any Linux Software RAID benchmarks that compare it to a single IDE drive. I'm not talking about using a "hardware" RAID controller (like those Promise cards), just straight Linux software RAID.

[adaptr]

Promise hardly provides what I would call hardware RAID - a real RAID controller will give a near-linear performance increase for each disk you add.
Linux software RAID can only come close to this when you put each disk on its own IDE channel.
As for reliability - that will depend just as much on the drives used.
Generally speaking, your RAID-0 set will, of course, fail twice as often (i.e. twice as soon) as a single drive would.

It's also a really bad idea to put /var/cache, /var/lib/portage, /home and /etc on the RAID-0 set.
If you save these on a seperate partition (RAID-1 for preference) you can always rebuild the system when a drive fails.
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