Dell PowerStore 5000X EMC PowerStore Installation and Service Guide - Page 111
Power control procedures, Power control procedure considerations
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C Power control procedures Learn how to power down and power up the system. Topics: • Power control procedure considerations • Power control procedures preview • Powering off procedures for PowerStore node • Powering on procedures for PowerStore node • Rebooting procedures for a PowerStore node • Powering off procedures for PowerStore appliances • Powering on procedures for PowerStore appliances • Powering off procedures for PowerStore cluster • Powering on procedures for PowerStore cluster 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. • If you are relocating or replacing hardware, to help identifying 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 numbers of all enclosures in your cluster. • A PowerStore X model appliance consists of two ESXi host nodes (node A and node B), running VMware ESXi version 6.7, and a controller VM on each that runs the PowerStore operating environment. Powering off a PowerStore X model node, appliance, 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 in the same mode that they were in when 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). Power control procedures 111