[Still Thinking]

But the article is about black drives (enterprise), not blue (consumer) or green (low power).

[Ernest_at_the_Beach]

I wasn't aware that Black drives were Enterprise drives.

Newegg has WD 4Tbyte drives and they call them Enterprise Drives.

See link at post #24.

WD also, some time back , introduced a line called Red drives for NAS.....