Power off storage nodes and management switches in standard racks.
CAUTION: The Lustre or Spectrum Scale (GPFS) file systems on nodes and switches in storage cabinets should only be powered off when it has been confirmed that the filesystems have been cleanly shut down. See the procedures in Power Off the External File Systems.
Set each cabinet PDU circuit breaker to OFF.
A slotted screwdriver may be required to open PDU circuit breakers.
To power off Motivair liquid-cooled chilled doors and CDUs, locate the power off switch on the CDU control panel and set it to OFF.
Refer to vendor documentation for the chilled-door cooling system for power control procedures when chilled doors are installed on standard racks.
Return to System Power Off Procedures and continue with next step.