OMG just shoot me.
So good news is the Solidigm/Intel SSDPF2NV307TZN1 D5-P5316 30.72 TB is seen by macOS via both my HighPoint cards (7120 (PCIe3) and 1580 (PCIe4)):
I got the drive. It shows right up. You can format it. You can use it.
The bad news:
The performance when you format at is as an APFS drive is horrible:
View attachment 2363072
Yet, if you format it as exFAT it works much better:
View attachment 2363073
This drive in theory should write at 3600MB/s and read at 7000MB/s. The 7,1 is PCIe3 so it should limit the speed. However, the 9400Pro, in windows, showed read writes at over 5000MB/sec, so I was expecting better reads and writes on this drive over my 15TB Micron 9300 Pro (which does about 2600MB/s read/write with FileVault on (faster with it off)). Frankly, I could live with the read/write speeds I get with exFAT as it's as fast or faster than my current drive, but I cannot live with teh slow 500MB/sec writes when formatted with APFS.
BTW, I moved my 15TB 9300 Pro to the 2nd port on the Highpoint card, and it still boots fine and it still read/writes at the same speed. I put this new drive on port0 on the card where the 15TB used to be.
ARG! This is so unbelievably frustrating.
I'm going to swap the cables just to see if that has any effect, but considering the wild differences based on formatting, I have my doubts.
Does anyone have any idea what could be messing up the drive read/writes so much, especially just based on formatting?