WD Purple PURZ vs PURX and 512e?

[Ezio]

HI I got some questions about thr putple drives. Any of these answered would be great!

*Is the WD Purple 4TB WD40PURZ or -PURX 512emulating and 4k physical. Or both physical and logical 4k?
*What’s the difference between WD40PURZ and PURX ?
*Are these purple drives SMR or CMR?
*Why do these come in two designs (see picture) ?

[Keerti_01]

Hi @Ezio,

Please refer below link to check PURZ specification:

2579-810247.pdf

Please refer below link to check PURX specification:

spec-sheet-wd-purple-surveillance-hdd-6tb-oem.pdf

[Ezio]

Those datasheets don’t say everything. Like is it CMR or PMR, and is it 4kn or 512e.