... improves the overall computing capabilitySupport SAS,SATAII hard disks mixed insert at the same arrayTotally support ... I/O, Cache utilization, power supply, fans, hard drive, ambient temperature etc.Support disk roaming, disk cloning, ... BBU back-up power supplySupport SAS, SATA hard drive, and support NCQ and TCQSupport DDR ECC cacheSupport ... 0, 1, 0+1, 3, 5, 6, 10, 30, 50, 60, NRAIDI/O bus3 64-bit ...