Installing and removing system componentsSafety instructionsWARNING: To avoid injury, do not attempt to lift the enclosure by yourself. Dell recommends that a minimum of two people liftthe enclosure.WARNING: Opening or removing the cover while the enclosure is powered on may expose you to a risk of electric shock.CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simplerepairs as authorized in your product documentation, or as directed by the online or telephone service and support team.Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructionsthat are shipped with your product.NOTE: Dell recommends ESD protection while working on components inside the enclosure.CAUTION: For proper operation and cooling for all the sleds, module bays, power supply units, and system fans must bepopulated with a component or a blank.Before working inside your enclosurePrerequisiteFollow the safety guidelines listed in Safety instructions.Steps1 Power off the compute sleds, the storage sleds, and then the attached peripherals.2 Disconnect the sleds, and the peripherals from the enclosure.3 Power off the enclosure.4 Disconnect the enclosure from the electrical outlet.5 Remove the enclosure from the rack.For more information, see the Rack Installation Guide at Dell.com/poweredgemanuals.After working inside your enclosurePrerequisiteFollow the safety guidelines listed in Safety instructions.Steps1 Install the enclosure into the rack, if removed.For more information, see the Rack Installation Guide at Dell.com/poweredgemanuals.2 Connect the enclosure to the electrical outlet.3 Power on the enclosure.4 Reconnect the sleds, and the peripherals into the enclosure.5 Power on the attached peripherals, the storage sleds, and then the compute sleds.5Installing and removing system components 25