Dell Shared PowerEdge RAID Controller 8 Cards For Dell PowerEdge VRTX Systems User’s Guide

Two existing non-fault tolerant controllers (connected to two enclosures each) to fault tolerant configuration.

1. Turn off the server modules. Click Server Overview → Power → Control → Power Off 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 Off System to turn off 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 configuration.
   • 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.