Basically the Intel Rapid Storage Technology supports Native Command Queuing (NCQ) but there is not an option to disable it.
I will forward your comments to the proper department to be considered on a future release.
You can confirm this information at the following url:
Thanks for the reply back. I noticed a poster had a issue with loosing his RAID 5. This is what enabling NCQ will do. There are numerous posts where the user is noting the loss of their raid. If you are using WD Raptors, then you must disable ncq. If your hard drives does not have a TLER algorithm in the firmware, you cannot turn ncq on. Also turning ncq on when using a raid slows read/write performance on your hard drives. If you explore windows 7`s registry, you will find out where Microsoft has the amd ncq disable installed. Somebody has their ducks in a row on this one.
I noticed a poster had a issue with loosing his RAID 5. This is what enabling NCQ will do.
Which can also be down to faulty drives, faulty SATA controller, bad PSU, bad BIOS, overclocking or this bug:
I have three ST3320620AS in RAID 5 (with power on hours 34123) they have NCQ its never been a problem except for the driver bug listed above.