Removing an expansion canister

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You can remove the expansion canisters in a 5U expansion enclosure.

Before you begin

Important: You can remove an expansion canister without powering off the expansion enclosure. However, to maintain operating temperature, perform the following tasks.
  • Do not remove a faulty expansion canister until its replacement is ready to be installed.
  • Do not remove an expansion canister from an operational enclosure for more than approximately 10 minutes. The reduction in airflow through the enclosure might cause the enclosure or its components to shut down to protect from overheating.

About this task

An expansion canister provides SAS connectivity between the 5U expansion enclosure and control enclosure system. If either of the two expansion canisters has a failure, the other expansion canister assumes the full I/O load. Figure 1 shows the features of an expansion enclosure.

Figure 1. Expansion canister
Expansion canister
  •  1  Canister fault indicator
  •  2  Canister status
  •  3  Canister power indicator
  •  4  and  6  SAS link fault indicators
  •  5  and  7  SAS link operational indicators
  •  8  Canister release handles

Procedure

  1. Read all safety information.
  2. Locate the expansion canister to be removed.
  3. Release the lower cable management arm to swing it out of the way, as described in Figure 1.
  4. Remove the SAS cables from the expansion canister, as described in Removing and installing a SAS cable.
  5. Rotate the handles on the expansion canister outward, as shown in Figure 2.
    Figure 2. Removing the expansion canister
    Removing the expansion canister
  6. Carefully pull the expansion canister out of the chassis and place it on a safe, level surface.

Replace the expansion canister

  1. To reinstall an expansion canister, or replace it with one from FRU stock, follow the procedure in Installing or replacing an expansion canister.