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8-2
Sun StorEdge 3000 Family Installation, Operation, and Service Manual • March 2004
■
“Configuring a Sun Server Running the Solaris Operating Environment” on
page F-1
■
“Configuring a Windows 2000 Server or Windows 2000 Advanced Server” on
page G-1
■
“Configuring a Linux Server” on page H-1
■
“Configuring an IBM Server Running the AIX Operating Environment” on
page I-1
■
“Configuring an HP Server Running the HP-UX Operating Environment” on
page J-1
■
“Configuring a Windows NT Server” on page K-1
8.2
Controller Failover
Controller failure symptoms are as follows:
■
The surviving controller sounds an audible alarm.
■
The RAID controller status LED on the failed controller is a solid amber.
■
The surviving controller sends event messages announcing the controller failure
of the other controller.
A “Redundant Controller Failure Detected” alert message is displayed and written
to the event log.
If one controller in the redundant controller configuration fails, the surviving
controller takes over for the failed controller until it is replaced.
A failed controller is managed by the surviving controller, which disables and
disconnects from its counterpart while gaining access to all the signal paths. The
surviving controller then manages the ensuing event notifications and takes over all
processes. It is always the primary controller regardless of its original status, and
any replacement controller afterward assumes the role of the secondary controller.
The failover and failback processes are completely transparent to the host.
Controllers are hot-swappable if you are using a redundant configuration, and
replacing a failed unit takes only a few minutes. Since the I/O connections are on
the controllers, you might experience some unavailability between the times when
the failed controller is removed and a new one is installed in its place.
To maintain your redundant controller configuration, replace the failed controller as
soon as possible. For details, refer to
Sun StorEdge 3000 Family FRU Installation Guide
.
Summary of Contents for StorEdge 3000 Series
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