Dell DR6000 Owners Manual - Page 69

Power Supplies, Power Supply Hot Spare Feature, Removing An AC Power Supply

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Power Supplies Your system supports two 1100 W power supply modules. When two identical power supplies are installed, the power supply configuration is redundant (1 + 1). In redundant mode, power is supplied to the system equally from both power supplies to maximize efficiency. NOTE: If two power supplies are used, they must be of the same type and have the same maximum output power. Power Supply Hot Spare Feature Your system supports the Hot Spare feature that significantly reduces the power overhead associated with power supply redundancy. When the Hot Spare feature is enabled, a redundant power supply is switched to a sleep state. The active power supply supports 100% of the load, thus operating at higher efficiency. The redundant power supply in the sleep state monitors output voltage of the active power supply. If the output voltage of the active power supply drops, the redundant power supply in the sleep state returns to an active output state. The active power supply can also activate a sleeping power supply if having both power supplies active is more efficient than having the redundant power supply in a sleep state. The power supply defaults are to wake both power supplies if the load on the active power supply is greater than 50% and to sleep the redundant power supply if the load falls below 20%. You can configure the Hot Spare feature using the iDRAC settings. For more information on iDRAC settings, see the iDRAC7 User's Guide at dell.com/support/manuals. Removing An AC Power Supply CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs 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 instructions that came with the product. CAUTION: The system requires one power supply for normal operation. On power-redundant systems, remove and replace only one power supply at a time in a system that is powered on. 69

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Power Supplies
Your system supports two 1100 W power supply modules.
When two identical power supplies are installed, the power supply configuration is redundant (1 + 1). In
redundant mode, power is supplied to the system equally from both power supplies to maximize
efficiency.
NOTE:
If two power supplies are used, they must be of the same type and have the same maximum
output power.
Power Supply Hot Spare Feature
Your system supports the Hot Spare feature that significantly reduces the power overhead associated
with power supply redundancy.
When the Hot Spare feature is enabled, a redundant power supply is switched to a sleep state. The active
power supply supports 100% of the load, thus operating at higher efficiency. The redundant power supply
in the sleep state monitors output voltage of the active power supply. If the output voltage of the active
power supply drops, the redundant power supply in the sleep state returns to an active output state.
The active power supply can also activate a sleeping power supply if having both power supplies active is
more efficient than having the redundant power supply in a sleep state. The power supply defaults are to
wake both power supplies if the load on the active power supply is greater than 50% and to sleep the
redundant power supply if the load falls below 20%.
You can configure the Hot Spare feature using the iDRAC settings. For more information on iDRAC
settings, see the
iDRAC7 User's Guide
at
dell.com/support/manuals
.
Removing An AC Power Supply
CAUTION: Many repairs may only be done by a certified service technician. You should only
perform troubleshooting and simple repairs 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 instructions
that came with the product.
CAUTION: The system requires one power supply for normal operation. On power-redundant
systems, remove and replace only one power supply at a time in a system that is powered on.
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