Drive Features - Large capacity: Massive capacity has been achieved through the development of head, media, signal processing technology, servo technology as an element technology allowing up to 11Gb/cm2 (75Gb/in2) high density and up to 75GB per disk, 300GB per drive (4 disks) high capacity. - High Performance: Read Ahead Cache and Write Reordering Cache enable the drives to execute read and write operation in high speed. - High Reliability: On the fly ECC (Error Correction Code) and S.M.A.R.T function enable the drives to improve the data reliability. - Silence: FDB spindle motor is incorporated for silent operation. - RoHS Compliance: This HDD is designed to meet the requirements of the European Union's RoHS directive.