Features With 3 Gb/s data transfer rate, native command queuing (NCQ), and 16 MB cache, these drives deliver optimum performance. SATA interface, 3 Gb/s data transfer rate, native command queuing (NCQ), and 16 MB cache Active Power Save delivers best-in-class seek mode power consumption through an advanced WD firmware which conserves power in active seek modes without degrading performance. Provides enhanced vibration tolerance by optimizing operation and performance when the drives are used in vibration-prone, multi-drive systems such as rack-mounted servers or network storage. WD RE2 drives employ PMR technology to achieve even greater areal density. With 1.2 million hours MTBF, these drives have the highest available reliability rating on a high-capacity drive

Main Specifications
Series	WD RE2
Model	WD3201ABYS
Form Factor	3.5" HD
Capacity	320GB
Interface	SATA 3 Gb/s
Rotational Speed	7,200 RPM (nominal)
Buffer Size	16 MB
Average Latency	4.20 ms (nominal)
Load/unload Cycles	50,000 minimum
Seek Times	Read Seek Time 8.9 ms Write Seek Time 8.9 ms (average) Track-To-Track Seek Time 0.6 ms (average) Full Stroke Seek 21.0 ms (average)
Power Dissipation	Read/Write 9.50 Watts Idle 8.75 Watts Standby 1.60 Watts Sleep 1.50 Watts
Transfer Rates	Buffer To Host 3 Gb/s (Max) Buffer To Disk 85 MB/s (Sustained)