The thing is I'll be using that workstation as my main PC with Win 10 on it so no zfs. I just wanted basic redundancy for my data.Is there something you're using VROC for that zfs/mdadm wouldn't suffice?
I couldn't find any info on bifurcation in manual/datasheet.In case you don't need VROC but don't know if the Asus Hyper M.2 will work without a VROC key...yes it will. Assuming you have bifurcation support on the motherboard and its set correctly, the Operating System should show you four separate drives...at least WIndows & Linux will. The usual caveat that they (probably) won't appear in BIOS anywhere, but you should still be able to boot from them if your system supports it.
It says, that it will work on x299/z370 chipsets, however P520 is C422, not sure about that.
I saw multiple photos of that card filled with mixed vendor ssds, it should work with non-intel nvmes.
Thanks!With the Hyper M.2 the four drives will appear to the operating system as four separate drives. From there, you should be able to do any software based RAID you want that will work with four drives. I have a Hyper M.2 with four drives in my NAS. I have an additional 5 drives in other M.2 cards/motherboard M.2. I've got all nine of them together in a ZFS RAIDZ2. In the past, I've used the same card for a striped mirror. If you stick to software based RAID like ZFS/MDADM, there's really no limitations.