Mac Pro 4,1 SATA for OS and RAID SAS for data?

Hello, Can I setup a new Mac Pro with two SATA drives for the OS and install a RAID Card and two SAS drives for data?
Or do they all have to be SAS or SATA drives in the machine? Meaning I cannot mix SATA and SAS.
Thanks,
Dean

Even MacWorld magazine liked the OWC drives.
If you are serious about using an SSD drive, they are generally too small for, and do not give enough speed improvement to, extensive documents, movies, pictures, Tunes, and so on. You should consider moving the /Users directory to a traditional Hard Drive.
Blocks on SDD drives can sustain a finite number of writes, thought to be in the neighborhood of 10,000. Some Cloning software is thought to do an abusive number of writes during cloning, so it may be better to install the System from scratch onto your new SSD.
I am an advocate of occasionally consolidating free space on an SSD drive and Zeroing it. Since these drives tend to be organized internally as really big blocks, eliminating small "free" blocks (with leftover data in them) may allow some drives to do fewer slow Read-Modify-Write cycles. This practice is, at best, controversial.

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