User`s guide

RAID Array 3000 Storage Subsystem
iv EK–SMCPO–UG. A01
2 RAID Array Controller (continued)
2.6.5 RAID 5............................................................................................ 2–16
2.6.6 JBOD ..............................................................................................2–18
2.7 System Parameters.............................................................................. 2–18
2.8 Redundant Operation .......................................................................... 2–20
2.8.1 Initialization....................................................................................2–20
2.8.2 Message Passing.............................................................................. 2–20
2.8.3 Failover........................................................................................... 2–20
2.9 Environmental .................................................................................... 2–21
2.9.1 Backup Power Management ............................................................ 2–21
2.9.2 Voltage Monitoring......................................................................... 2–22
2.9.3 Temperature Monitoring..................................................................2–24
3 Maintenance
3.1 Introduction .......................................................................................... 3–1
3.2 Pedestal Status and Power LEDs...........................................................3–2
3.3 SBB Status LEDs.................................................................................. 3–2
3.4
Controller LEDs ...................................................................................3–3
3.5
EMU Error Reporting ........................................................................... 3–4
3.6 EMU Error Conditions.......................................................................... 3–4
3.6.1 Replacing Components (FRU’s) ........................................................3–5
3.6.2 Removing the Pedestal Door .............................................................3–5
3.6.3 Replacing an SBB ............................................................................. 3–6
3.6.4 Replacing a Power Supply.................................................................3–7
3.6.5 Replacing the RAID Array Controller ...............................................3–8
3.6.6 Replacing the EMU Board.................................................................3–9
3.6.7 Replacing the UPS .......................................................................... 3–11
3.7 Differential/Wide UltraSCSI Bus........................................................ 3–11
3.7.1 Reconfiguring the SCSI Bus............................................................ 3–12
3.8 Replacing the Controller Memory Cache Modules.............................. 3–16