Users Guide

Two existing non-fault tolerant controllers to fault tolerant
conguration
Two existing non-fault tolerant controllers (connected to two enclosures each) to fault tolerant conguration.
NOTE: In a dual controller fault tolerant conguration, a maximum of two enclosures are supported. This scenario results in a loss
of two enclosures.
CAUTION: Before performing the transition, back up all data and complete the steps outlined in prerequisites for transition
scenarios section. See Prerequisites for transition scenarios.
1 Turn o the server modules. Click Server Overview → Power → Control → Power O Server for every server.
2 Click Chassis Overview → Storage → Controllers → Troubleshooting → Actions → Enable Fault Tolerance to enable Enable Fault
Tolerance for both controllers.
An error message appears stating that the controllers are not Fault Tolerant because the peer controller is not available. This is
expected.
3 Click Chassis Overview → Power → Control → Power O System to turn o the chassis.
4 Cable enclosure(s) to Shared PERC 8 External cards using required cabling methodology.
NOTE: Only two enclosures are supported in a dual controller fault tolerant conguration.
NOTE: This cabling topology is required for fault tolerance to function.
5 Click Chassis Overview → Power → Control → Power On System to turn on the chassis.
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Deploying the Shared PERC 8 card