ms-be2017 has a failed disk, showing in icinga:
CRITICAL: Slot 3: Failed: 2I:4:1, 2I:4:2 - OK: 1I:1:5, 1I:1:6, 1I:1:7, 1I:1:8, 1I:1:1, 1I:1:2, 1I:1:3, 1I:1:4, 2I:2:1, 2I:2:2, 2I:2:3, 2I:2:4, Controller, Battery/Capacitor
Please investigate and repair.