

When I looked into this I found that, for TrueNAS, using ZFS with RAW disks is generally preferable.
I wound up writing custom firmware to my hardware RAID card so that it would be effectively “transparent” and yield direct hardware access to the disks.







I picked up an old Dell server some time ago and wound up finding firmware that made the RAID card passthrough so that TrueNAS could have direct access to disks for ZFS
That server was all SATA based so I’m not sure what options you’ll have, but it’s worth looking into.
Ultimately, my thinking is that just because there’s something “better” out there doesn’t mean you shouldn’t work with what you have.