Issues passing through HBA card to TrueNAS

Hi all,

I am having issues passing through a SAS2008 LSI card to a TrueNAS VM in Proxmox.

The installer works no problem running TrueNAS on bare-metal but when I run the TrueNAS installer in a VM with the HBA card passed through, the machine hangs on the following screen:


Obviously it doesn't hang on baremetal so I think I am missing something somewhere?

Hardware:
HP Proliant ML310e Gen8 V2
Xeon CPU E3-1245 v3
32GB DDR3 ECC Memory

This is my GRUB commandline...

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