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

Dual Shared PERC 8 External fault tolerance

Turn off the server modules. Click Server Overview → Power → Control → Power Off Server for every server.
Click Chassis Overview → Power → Control → Power Off System to turn off the chassis.
Open the system and install two Shared PERC 8 External cards in Slots five and six.
Click Chassis Overview → Power → Control → Power On System to turn on the chassis.
To enable Fault Tolerance on two Shared PERC 8 External cards, the firmware version must be the same for both cards. Click Chassis Overview → Storage → Update and upload the necessary firmware image for both Shared PERC 8 External cards.
Click Chassis Overview → Storage → Controllers → Troubleshooting → Actions → Enable Fault Tolerance for both controllers.
Click Chassis Overview → Power → Control → Power Off System to turn off the chassis.
Cable enclosure(s) to Shared PERC 8 External cards using required cabling methodology.
- NOTE: The cabling topology shown in this section is required to function fault tolerance.
Click Chassis Overview → Power → Control → Power On System to turn on the chassis.
- NOTE: To transition from one enclosure to two or vice versa, while already in Fault Tolerance, simply turn off the server modules and enclosure, recable, and then turn on.
Figure 1. Cabling for Shared PERC 8 External card single enclosure Fault Tolerance
Figure 2. Cabling for Shared PERC 8 External card dual enclosure Fault Tolerance