4tb storage capacity
3.5" form factor
sata iii 6 gb/s interface
256mb cache
5400 rpm
data transfer speeds up to 180 mb/s
600,000 load/unload cycles
1 million hours mtbf
dual-plane balance control
noise and vibration protection
the 4tb red plus 5400 rpm sata iii 3.5" internal nas hdd from wd is built to handle the workloads of raid-optimized nas systems with up to 8 drive bays, including home offices and power users, small to medium businesses, and consumer and commercial nas systems. this 4tb drive operates using a sata iii 6 gb/s interface, a 256mb cache, and a rotational speed of 5400 rpm, which all help to ensure uninterrupted data transfers with a rate of up to 180 mb/s.