Hard Drive Colors (Western Digital)

Black

• Best for Gaming, media and content creation

Blue

• General Storage Home User
• Performance is lower than Black HDD - 7200 rpm

Gold

• Made for a multitude of Datacenter-specific applications

Green

• More power-efficient
• Very Low Performance
• Slower read and write speeds

Purple

• Video surveillance 9 storage, 24 * 7 continuous working design

Red

• Server / NAS / datacenter HDD
• These drivers have fast read speeds