EF300 and EF600 with NVME drives AND the following conditions: Data Assurance is disabled on one or more volumes in a volume group EF-Series controller(s) reboot randomly and may cause volume failures...EF300 and EF600 with NVME drives AND the following conditions: Data Assurance is disabled on one or more volumes in a volume group EF-Series controller(s) reboot randomly and may cause volume failures. SERR Return Status: 0x00000000 PCI-E Root to PLX9797-1 (Unit 1) PCI-E XP Uncorrectable Status = 0x00000040 PLX9797-1 Port 0 to Drive11 (Unit 15) PCI-E Device Status = 0x000D PCI-E AER Uncorrectable Status = 0x00100000 PCI-E AER Correctable Status = 0x00008000