Deployment Guide

Add the Expansion Enclosure to the A-Side Chain
Connect the expansion enclosure to one chain at a time to maintain drive availability.
1. Disconnect the A-side chain that interconnects the storage controllers.
Remove the SAS cable that connects storage controller 1: port A to storage controller 2: port B.
Figure 73. Remove the A-Side Cable from the Storage Controllers
1. Storage system
2. Storage controller 1
3. Storage controller 2
2. Add the expansion enclosure to the A-side chain.
a. Connect a SAS cable from storage controller 1: port A to the expansion enclosure: left EMM, port C.
b. Connect a SAS cable from storage controller 2: port B to the expansion enclosure: left EMM, port B.
Figure 74. Connect the A-Side Cables to the Expansion Enclosure
1.
Expansion enclosure 2. Storage system
3. Storage controller 1 4. Storage controller 2
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Adding or Removing an Expansion Enclosure