Available in capacities from 1- to 4TB, WD’s Purple 3.5-inch drives are designed specifically for the rigors of video-surveillance, where the drive spends the vast majority of its time writing.

It also supports Western Digital's nCache 4.0 tech and Microsoft DirectStorage. Notably, this mini SSD is available in three different capacities, with 500GB, 1TB, and 2TB models available.

2TB of TLC NAND for $220. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The new WD SN770M SSD is shaping up to be a good drive for anyone ...

WD announced the expansion of its award-winning WD Purple line of 3.5-inch hard drives for video surveillance applications, with the release of the 6 TB capacity.