Veeam 9.5
vmtools installed
Not sure if quiescence was enabled, I've already scrapped that pfsense instance and deployed a new one, had to reconfigure everything from scratch
I don;t think it was a write issue, I had 30 days worth of backups and every single one of them had the same issue. I restored alreayd a few other pfsense firewalls and none had this issue restoring from Veeam.
Bear in mind this was one of the first pfsense devices I deployed like 4+ years ago so it could be that some update screwed it up.
I tried file level restore but I could not get the appliance working, as it was a urgent matter we just ended up reconfiguring it from scratch