Sometimes, it is necessary to power down all node canisters in a system. For example, you
might need to shut down the system before you do the maintenance actions in your data
center.
Before you begin
Notes:
- It is not generally necessary to shut down the entire system (all node canisters) when you
complete service actions.
- Service actions upon a node canister require only one node canister in the control enclosure to
be shut down. If one node canister of an I/O group is online and communicating with hosts and other
nodes, volumes that depend on resources of the I/O group can remain online.
- Service actions upon a control enclosure might require the control enclosure to be shut down. In
this case, the I/O group that is provided by the control enclosure goes offline. All volumes that
depend on that I/O group become disabled. However, other I/O groups in the system can continue to
operate.
Procedure
-
Stop all host I/O to volumes on the system.
-
Shut down the system by using the management GUI. Click . From the System Actions menu, select Power Off
System.
-
Disconnect the power cords from both power supplies in each control enclosure.
-
Disconnect the power cords from both power supplies in each expansion enclosure.