Intel RAID High Availability Storage User Manual page 19

Figure 11 Adding a Second Disk Enclosure - Redundant Configuration
The steps for adding the second disk enclosure are as follows:
1. Connect a link from port 2 on ESM B of drive enclosure A to port 1 on ESM B of drive enclosure B.
2. Disconnect the link from port 1 on ESM A of drive enclosure A and reconnect it to port 1 on ESM A of
drive enclosure B.
3. Disconnect the link from port 0 on ESM A of drive enclosure A and reconnect it to port 0 on ESM A of
drive enclosure B.
4. Connect the link from port 2 on ESM A of drive enclosure B to port 0 on ESM A of drive enclosure A.
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Intel High Availability Storage User Guide 19