Saw II came out in a digital optical disc storage format.
== See also ==Disk arrayDisk drive performance characteristicsDisk read-and-write headMagnetic storageRAIDUSB flash drive== References ==
 Vigorous innovation in disk storage technology, coupled with less vigorous innovation in tape storage, has reduced the difference in acquisition cost per terabyte between disk storage and tape storage; however, the total cost of ownership of data on disk including power and management remains larger than that of tape

