You may also want to stay away from onboard RAID for critical data,
whilst many find it fine - there are many who find otherwise. So worth
verifying experience with your particular motherboard & BIOS version,
particularly paying attention to the actual recovery process required
Plenty of cheap ATA/SATA RAID cards about, altho personally I
prefer the 3ware only if you want to use RAID re proven reliability.
The 3ware 2-port SATA cards are cheap, not much more than the
Highpoint 4-port cards yet frequently cited as problematic.
A pity 3ware doesn't drop the price of it's 4-port cards, since it now
has a range which extends all the way beyond 8-port into 12-port cards.