bb70e423_le_Intel__HM57_Express_Chipset__Benefit
[Feature] Intel® Rapid Storage Technology (Intel® RST) [Benefit] 
With additional hard drives added, Intel® RST provides quicker access to digital photo, video, and data files with RAID 0, 5, and 10, and greater data protection against a hard disk drive failure with RAID 1, 5, and 10. Support for external SATA (eSATA) enables the full SATA interface speed outside the chassis, up to 3 Gb/s.
Mobile Intel® HM57 Express Chipset
Benefit