Removing an expansion canister
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 96 on page 98 shows the features of an expansion enclosure.
Figure 96. 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 “Moving the cable
4. Remove the SAS cables from the expansion canister, as described in “Removing and installing a SAS
5. Rotate the handles on the expansion canister outward, as shown in Figure 97 on page 99.
98 IBM Cloud Object Storage System
™
Version 3.15.6: J15 Appliance Manual
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