Western Digital HDD Types

https://en.wikipedia.org/wiki/Western_Digital#Use_case_classes

Color/branding Target warranty [years] Description
Green Eco 2 Discontinued for HDDs in 2015
Blue Desktop 2
Purple Surveillange 3 Write-heavy use-case
Purple Pro Surveillance 5 Write-heavy use-case
Red NAS 3
Red Plus NAS 3
Red Pro NAS 5
Black High-perf. desktop 5
Gold Enterprise 5
Ultrastar data center 5