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RAID Combinations

L

lchyi

Senior member
For some reason I've always thought that RAID would only work of two of the same interface were put into the array. But I saw some motherboard specs that pointed out that you can have RAID with an ATA and a SATA. I'm still unsure how a RAID array works, but in RAID 0, if you put together the Western Digital Raptor 10,000RPM and lets say a Western Digital 7200RPM, would it work as fast as the 7200? Or would there be a compromise between the two speeds?
 
I am pretty sure you have to have two drives that are the exact same. However on that mobo you could have a RAID array on SATA and also set one up on ATA at the same time if you wanted to.
 
You don't have to have drives that are the same. I was running an AID0 (it's not redundant so no R 😉) with a WD:SE 80gb 7200rpm 8mb cache and a IBM 80gb 7200 2mb cache drive, and it was working fine. I then upgraded to another WD:SE and it's a little faster (though that might just be the Placebo effect 😉)

It will be down to the individual raid card whether you can use a PATA and SATA in the same array, or whether it just means you can set up seperate arrays, one PATA and one SATA.

However, you will be crippling the speed of the Raptor and the storage capacity of the PATA drive to put them both together. Use the Raptor for OS/programs/games, and the PATA for storage, and that will be better 🙂


Confused
 
often cards are built for 2 SATA and one IDE, so you can image the IDE drive onto the RAID array. but if you use different speeds you'll be limited by the slowest (similar to DDR RAM), if you use different sizes you'll be limited by the smallest (ie 40+60=80).
 
The best SATA drive out there right now is the Raptor....so it may cost a lot but it has proved itself quite worthy of the price in benchmarks with Seagate SATA drives.
 
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