Quote:
Originally Posted by rock-reed
The RAID card is an Adaptec CERC SATA1.5/6ch
Is that a good one?
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From a quick web search this appears to be a software RAID card. Does it say "HostRAID" anywhere?
There's nothing absolutely horrible about software RAID... it's just not as fast as doing it in hardware, and it may not be supported by alternative operating systems. I have an Intel software SATA1 RAID setup (1+0) under XP SP2 which has an average read speed of 150MB+/sec.
As darling2 suggested, RAID10 (aka RAID 1+0) will probably give you the best performance overall as it is both striped (faster) and mirrored (redundant). The downside is that out of 4 x 250GB drives the array capacity will only be 500GB (half of the total). The next best would probably be RAID5.
RAID0 is not redundant at all.