Bought an HDD for external storage for Mac. Showing 0KB storage space and won't initialize

[kimjongsplooge]

I bought an internal HDD to use as external storage for my Mac. I already have a 1TB that I use and I bought a 6TB because my dock has two slots. When I insert the new HDD into the dock it won't initialize and when I go into Disk Utility on Mac it's showing 0KB storage space and nothing I do either erase or restore will work its just giving me a nondescript error. My 1TB was just plug and play so I'm confused at what I'm doing wrong. The HDD is the WD 6TB NASware 3.0. I tried the HDD that works in both slots of the dock and it works in both. I even switched to my windows machine but neither of the disks are showing up on it. 

[Kilrah]

Did you try it one drive at a time? My dual dock sometimes does funky things when both slots are populated, kinda defeats the purpose but...

[Cyberat]

Does your dock support 6TB Capacity drives ?

[kimjongsplooge]

Yes to both of these

[kimjongsplooge]

Is there any easy way to see if the drive is damaged? It might be a hardware issue at this point I've tried everything

[Kilrah]

Best would be to try it on a completely different system/interface.