There are suspicions of problems with RAM or HDD. But you wrote that they gave the car to another host.
I ran out of ideas. ((
Found similar problems that occurred with other users. I did not know whether you were looking through their messages or not...
Tried to unpack the archive manually?
1) lzop -d /dirbackup/vzdump-qemu-xxxx.vma.lzo
2) vma extract vzdump-qemu-xxxx.vma ./extract
WMA utility included in proxmox
Then try inserting the image file into the virtual machine.
I confirm that updating the controller firmware solves the problem with installing proxmox ve 5.3.2 HP DL 380 G5 (P56). Smart Array P400 and P400i
The initial version of the firmware version was 4.12. Updated to latest version 7.24
I took the firmware from the disk version of the HP SSP -...