Dell PowerStore Installation and Service Guide for PowerStore 1000, 1200, 3000, 3200, 5000, 5200, 7000, 9000, and 9200

Power control procedure considerations

Note the following before you get started:

• Powering off a node, appliance, or cluster can take several minutes to complete.
• In a true emergency power off situation, turn the cabinet power switches to the off position to immediately remove power from the all cabinet components.
• Working with hardware may cause electrostatic discharge that could damage your hardware. Before working with any hardware, take precautions around handling replaceable units. See Safety precautions for handling replaceable units.
• If you are relocating or replacing hardware, to help identify associated enclosures when you are ready to cable and power on:
  • Ensure that you make a note of the cabling between enclosures and the appliances. If you used cable labels at the time of initial installation, reconnecting the cables is easier.
  • Ensure that you also record the Dell Service Tag of each enclosure in your cluster.
• A PowerStore X model appliance consists of two ESXi host nodes (node A and node B), running VMware ESXi version 7.0.3, and a controller VM on each that runs the PowerStore operating environment. Powering off a PowerStore X model node or cluster requires operations in the associated VMware vCenter server. See the VMware documentation for more information about the vCenter server commands.
• Nodes in the appliance power on into the same mode they were in before the appliance was powered off. If a node powers on in service mode:
  1. Log in to the appliance from an SSH client.
  2. Run the svc_rescue_state clear command to clear the boot mode.
  3. Run the svc_node reboot command.
     • For a PowerStore T model node, this command reboots the node itself.
     • For a PowerStore X model node, only the PowerStore controller VM gets rebooted.

     Once rebooted, the node returns to normal mode.

     NOTE:The svc_node service script, with reboot and shutdown arguments, is typically used in the context of rebooting or powering off a PowerStore T model node.

     Use the VMware vCenter server commands to reboot or power off a PowerStore X model node. In PowerStore X model nodes, running the svc_node service script with reboot or shutdown arguments only affects the PowerStore controller VM.

     Unless specifically directed by your service provider, for PowerStore X model appliances, use the svc_node service script only for the following purposes:

     • Go out of service mode (reboot argument).
     • Power on the node (power_on argument).

  For more information about the service scripts, see the PowerStore Service Scripts Guide.

• If both nodes in an appliance reboot in service mode, always return Node A to normal mode first to avoid management software conflicts. After Node A is operating normally, you can return Node B to normal mode.
• Before powering down an appliance with metro volumes, ensure that the role of the metro volumes on the appliance are all set to non-preferred. Refer to the Protecting Your Data guide for details about setting metro volume roles.