Silicon Graphics InfiniteStorage 4000 Series System Upgrade Manual page 79

Chapter 2: Upgrading Trays in the Storage Array
Figure 49 Controller Air Blocker
10. Insert the controller air blocker into the open controller slot to make sure that
correct airflow is maintained.
Figure 50 Inserting the Controller Air Blocker into the Open
Controller Slot
11. If Small Form-factor Pluggable (SFP) transceivers are present, record the ports to
which they are attached, and remove them.
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