Summary Of I/O Path Failure And Failover Scenarios For Redundant Fibre Channel Fabrics; Table 2-3 I/O Path Failure And Failover Scenarios For Redundant Fibre - Compaq 112726-001 - ProLiant - 6500 Administrator's Manual

Summary of I/O Path Failure and Failover
Scenarios for Redundant Fibre Channel Fabrics
Table 2-3 identifies possible I/O path failure events for both dual redundancy
or quad redundancy configurations in a redundant Fibre Channel Fabric and
the failover response implemented by Secure Path for each failure.
I/O Path Failure and Failover Scenarios for Redundant Fibre Channel Fabrics
Description of Failure
A single port on an array controller
fails.
One array controller in a storage
subsystem fails.
The Fibre Channel cable
connection between an array
controller and its Fibre Channel
SAN Switch is broken.
A Fibre Channel SAN Switch fails.
The Fibre Channel cable
connection between a host
adapter and a Fibre Channel SAN
Switch is broken.
A host adapter fails.
Table 2-3
Failover Response
The I/O path to the defined backup array controller port takes over
all I/O activity.
The I/O paths to both ports on the other array controller take over
all I/O activity.
The I/O path to the defined backup array controller port takes over
all I/O activity.
The I/O paths for another fabric take over all I/O activity.
The I/O path from the host adapter in the node that is connected to
the defined backup array controller port takes over all I/O activity.
The I/O path from the host adapter in the same node that is
connected to the defined backup array controller port takes over all
I/O activity.
Cluster Architecture 2-25