e. Enter System Setup and if the time and date are still incorrect, see Getting help section.
Power supply unit
NOTE: While replacing the hot swappable PSU, after next server boot; the new PSU automatically updates to the same
firmware and configuration of the replaced one. For updating to the latest firmware and changing the configuration, see the
Lifecycle Controller User's Guide at https://www.dell.com/idracmanuals.
NOTE: For information about DC PSU cabling instructions, go to https://www.dell.com/poweredgemanuals > Rack
Servers > PowerEdge XR5610 > Select This Product > Documentation > Manuals and Documents > Cabling
instructions for – 48 – 60 V DC power supply.
Hot spare feature
Your system supports the hot spare feature that significantly reduces the power overhead associated with the power supply
unit (PSU) redundancy.
When the hot spare feature is enabled, one of the redundant PSUs is switched to the sleep state. The active PSU supports 100
percent of the system load, thus operating at higher efficiency. The PSU in the sleep state monitors output voltage of the active
PSU. If the output voltage of the active PSU drops, the PSU in the sleep state returns to an active output state.
If having both PSUs active is more efficient than having one PSU in the sleep state, the active PSU can also activate the
sleeping PSU.
The default PSU settings are as follows:
● If the load on the active PSU is more than 50 percent of PSU rated power wattage, then the redundant PSU is switched to
the active state.
● If the load on the active PSU falls below 20 percent of PSU rated power wattage, then the redundant PSU is switched to
the sleep state.
You can configure the hot spare feature by using the iDRAC settings. For more information, see the iDRAC User’s Guide
available at www.dell.com/poweredgemanuals.
Removing a power supply unit blank
Prerequisites
1. Follow the safety guidelines listed in the Safety instructions.
2. Follow the procedure listed in the Before working inside your system.
NOTE:
The procedure to remove the power supply unit blank is the same for Rear Accessed and Front Accessed
configurations.
Steps
Pull the blank out of the system.
CAUTION:
To ensure proper system cooling, the PSU blank must be installed in the second PSU bay in a
non-redundant configuration. Remove the PSU blank only if you are installing a second PSU.
NOTE: You must install a power supply blank in a unused slot to maintain Federal Communications Commission (FCC)
certification of the system. The blank also keeps dust and dirt out of the system and aids in proper cooling and airflow inside
the system.
138 Installing and removing system components
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