Synology 923+ cache

[Enquiries]

Hello. I’m looking for a recommendation for my ds923 for read-write cache.

I ran the cache advisor in dsm and it said 640gb so I’m assuming 1tb for extra overhead.

I was looking at the WD black, then I saw WD makes a nas rated nvme….. so maybe that’s a better fit?

What is your recommendation?

Thanks again.