Infortrend RAID Controller Manual

Figure 12 - 10 Controller Failover
E. Controller Failure
Controller failure is managed by the existing controller. The
existing controller disables and disconnects from its counterpart
while gaining access to all the signal paths. The existing
controller then manages the ensuing event notifications and takeover
process. The existing controller is always the Primary
controller regardless of its original status and any replacement
recombined afterwards will assume the role of the Secondary.
Symptoms
� LCD on the failed controller is off. LCD on the existing controller
displays controller failure message.
� The existing controller sounds alarm
� The "ATTEN" LED flashing on the existing controller
� The existing controller sends event messages notifying controller
failure
Redundant Controller 12-9