64-bit, 133MHz PCI-X, RAID 0, 1, 0+1, 5, Ultra320/Ultra3/Ultra2
The Smart Array 642 Controller is a 64-bit, 133MHz PCI-X, dual channel, SCSI array controller for entry-level hardware-based fault tolerance that allows you to configure up to 6 internal and 14 external hard drives to store up to 2.9 TB of storage.