Procedure: Identifying which enclosure or canister to service

Before you begin service actions on an enclosure or canister, verify that you are working on the correct enclosure or canister.

About this task

Because of the differences between the enclosures, you must be able to distinguish between the control enclosures and the expansion enclosures when you service the system. Be aware of the following differences:
  • The model type that is shown on the labels. See Table 1 for a list of model numbers.
  • The number of ports at the rear of the enclosure. Control enclosures have Ethernet ports, and USB ports on the canisters. Expansion enclosures do not have any of these ports.
  • Identify the enclosure by its serial number. The serial number is found on the front left end cap of the enclosure and is repeated on the rear of the enclosure. The serial number is always unique.
  • Within an enclosure, a canister is identified by its slot location. Viewing the enclosure from the rear, slot 1 is on the left and slot 2 is on the right.
  • A canister is uniquely identified by the enclosure that it is in and its slot location. This ID is shown as E-C or E|C where E is the enclosure ID and C is the canister location.
    On the service assistant, the ID is known as the Panel.
    Note: When a node canister is added to a clustered system as a node, it is given a node name and a node ID. The default node name is nodeN, where N is an integer number. This number does not represent the slot location of the node. Similarly, the node ID does not indicate the slot location. In the management GUI, select Monitoring > System. On the System page, select the node to display both the node name and the canister location. The service assistant home page also shows both the node name and the canister location. If you have only the node name, use these panels to determine the node canister location.
  • Use the service assistant to identify a node canister by turning on the identify LED of the containing enclosure. This option is at the upper left of the service assistant page. It is a good practice to identify a canister in this way before you perform any service action. Performing a service action on the wrong canister can lead to loss of access to data or loss of data. The Monitoring > System page of the management GUI can also be used to control the identify LEDs.