WD makes the following drive classes for consumers:
- Green: low-power, value client
- Blue: mainstream client
- Black: high-performance client
- Red: consumer and small-business storage server (NAS)
-- Red (base): SMR, up to 8 drives (not recommended for heavier usage or advanced RAID configurations)
-- Red Plus: CMR, up to 8 drives
-- Red Pro: CMR, up to 24 drives, higher performance
- Purple: Surveillance and streaming video content