PERC H800 - can it be flashed to IT mode?

If it can’t, is it safe to have TrueNAS Scale or Proxmox using those disks for ifs simply by not using raid?

The Dell PERC H800 uses the same chipset as an LSI 9280. Unfortunately the particular usage of the SAS2108 chipset on the H800, prevents it from supporting IT mode as it is RAID only.

For more info, look at this STH thread