This FATAL error is the one shutting down the node. The minimum space for a node is 500GB and this node doesn’t think there is that much space available on the disk or less than 500GB has been assigned:
2023-09-12T12:32:38+02:00 WARN piecestore:monitor Disk space is less than requested. Allocated space is {“bytes”: 283266360320}
2023-09-12T12:32:38+02:00 ERROR piecestore:monitor Total disk space is less than required minimum {“bytes”: 500000000000}
If the node isn’t detecting space correctly then you can change the config.yaml to tell the node not to check the available space on start: