Intel released a new version of it's IAA RAID Edition for the new i865/875 chipsets. It improves data transfer rate with SATA RAID using the integrated chipset features. According to the release notes bugs and problems were ironed out and some goodies were added. Most interesting of those is the addition of redundant RAID 1 arrays on select Intel 865 and 875 chipset-based platforms using Windows XP or Windows 2000. Read More for the links. The Intel® Application Accelerator RAID Edition is necessary software if you have the required hardware and would like to maximize system performance by enabling Intel® RAID Technology and storing your data on a RAID 0 volume. The Intel Application Accelerator RAID Edition is not required for standalone Serial ATA hard drive(s) to work properly (e.g. not configured for RAID). IAA Download - Readme - Release Notes