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.
www.dell.com/poweredgemanuals
.
Removing a power supply unit blank
Prerequisites
Follow the safety guidelines listed in
Safety instructions
.
Steps
If you are installing a second power supply unit, remove the power supply unit blank in the bay by pulling the blank outward.
CAUTION:
To ensure proper system cooling, t he power supply unit blank must be installed in the second power supply
unit bay in a non-redundant configuration. Remove the power supply unit blank only if you are installing a second power
supply unit.
Figure 117. Removing a power supply unit blank
Next steps
Install the second power supply unit blank.
Installing a power supply unit blank
Prerequisites
Follow the safety guidelines listed in
Safety instructions
.
NOTE:
Install the power supply unit (PSU) blank only in the second PSU bay.
Steps
Align the PSU blank with the PSU slot and push it into the PSU slot until it clicks into place.
154
Installing and removing syst em components
Содержание PowerEdge R640
Страница 1: ...Dell EMC PowerEdge R640 Regulatory Model E39S Series Regulatory Type E39S001 ...
Страница 9: ...Figure 1 Supported configurations for PowerEdge R640 Dell EMC PowerEdge R640 overview 9 ...
Страница 28: ...Figure 18 Memory information jumper setting and NVDIMM battery removal 28 Dell EMC PowerEdge R640 overview ...
