Latest Wd 4tb Red Plus Nas HDD CMR 256 Mb Cache Wd40efpx

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.