Current max. EHD size?

Hi folks. I found a couple of old threads on this topic, nothing recent. The 1TB EHD I have attached to my ViP 211 tanked. Lasted 6+ years so I'm not complaining. It was a very basic WD My Book Essential, not designed for this application. What's the current max. size (I think I heard 2 TB?) and what's a good replacement?

Thanks...

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