Hella Johannes, Ralf, meanwhile I have done the tests with the following configurations: RAID-Server: Leap 42.3 with the change form Ralf. Typ: FCoE Target system Connected tests systems: SLES11SP4 : Typ: FCoE-Initiator. Number of test systems: 6 4 test systems: connected via 2 virtual servers 1 test system: connected via 7 virtual servers 1 test system: connected via 11 virtual servers SLES12SP2 : Typ: FCoE-Initiator. Number of test systems: 2 1 test system: connected via 7 virtual servers 1 test system: connected via 11 virtual servers Testcases: Reboot of all test system: Result: o.k. Shutdown and boot of all test systems: Result: o.k. Open testcases (planed for the next week): Hard stop (destroy the test systems with virsh destroy) Hard reset with a forced crash Differ between Boot/Reboot and Hard stop/Hard reset: In boot/reboot a FC-Logoff is send and close the connection. In Hard rest/Hard stop no Logoff over FC is send. Expect is also a well done behavior. Best regards