Linux array on freeNAS

I have a 4x 6TB RAID5 array (I believe ext4 mdadm) in a WD ex4 with (I think) a dead PSU, but it could be something else- apparently WD bricked a bunch with a firmware upgrade


I am planning on building a second freeNAS with some spare bays. Can I connect the linux array to freeNAS? Even just read-only would be helpful.

I’m not exactly clear as to what you’re trying to accomplish…