What is the difference between these 3 WD 18TB Enterprise drives?

[philb2]

Newegg has 2 different items for apparently the same 18TB Enterprise drive. Only the model numbers differ. I do I figure out these differences? Why the big difference in price?

https://www.newegg.com/western-digi...604-18tb/p/1Z4-0002-01NK8?Item=9SIA994K5B5431 @ $239

https://www.newegg.com/western-digi...459-18tb/p/1Z4-0002-01CG8?Item=9SIA2W0JVG7696 @ $319

 

[Dopamin3]

Even though those are on "Newegg" they are both sold by ServerPartDeals. On Western Digital's datasheet for the DC H550 drives they don't even reference the less expensive model: https://documents.westerndigital.co...c500-series/data-sheet-ultrastar-dc-hc550.pdf

I think the main difference is sector size, 4Kn = 4096 and 512e = 512. Probably contact ServerPartDeals directly if you have more questions on this.

edit:

WUH721818ALN604​

WUH721818ALE6L4​

This explains one of them, I have no idea what "N6" indicates for the interface, maybe it's a typo and they meant E6 as well?

 

[pendragon1]

ask wd.

 

[philb2]

Even though those are on "Newegg" they are both sold by ServerPartDeals. On Western Digital's datasheet for the DC H550 drives they don't even reference the less expensive model: https://documents.westerndigital.co...c500-series/data-sheet-ultrastar-dc-hc550.pdf

I think the main difference is sector size, 4Kn = 4096 and 512e = 512. Probably contact ServerPartDeals directly if you have more questions on this.

edit:

WUH721818ALN604​

WUH721818ALE6L4​

View attachment 609720

This explains one of them, I have no idea what "N6" indicates for the interface, maybe it's a typo and they meant E6 as well?

Thanks. I am saving this chart in my 1Note file on computer hardware.

 

[philb2]

The lower priced drive offers 4Kn. Here is a website that explains what that means:

https://nascompares.com/answer/the-...d-drives-on-storage-capacity-and-performance/