This board has two onboard RAID controllers:
Intel® Matrix Storage Technology that supports software SATA RAID 0, 1,5, 10.
Intel® Embedded Server RAID Technology and the LSI Logic SATA controller that support software SATA RAID 0, 1 and
Intel Matrix Simulator:
You will see that as Dan_O stated, it is true, Intel (R) Matrix is much more easy to use.
All the best,
For Matrix (RST) RAID: The performance of a RAID 1 array is greater than that of a single drive because data can be read from multiple disks - the original and the mirror - simultaneously:
For ESRT2 RAID there is also the ability to read from both drives in a RAID 1 set. For example, when a single drive is busy, the second drive is read. There are also cache options available that can increase data throughput performance for certain read/write situations (random, sequential...). For more information see the Intel® RAID Software User’s Guide.