Dell PowerEdge R910 Hardware Owner's Manual - Page 154

Power Supplies

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17 If applicable, install the memory-riser blanks. See "Installing a MemoryRiser Blank" on page 100. 18 Close the system. See "Closing the System" on page 90. 19 Reconnect your system and peripherals to their electrical outlets, and turn on the system. Power Supplies Your system supports the following power supply modules: • 1100 W (high output power supply) • 750 W (energy smart power supply) When a 10 Gb I/O card is installed, the system must have at least two power supplies connected to an A/C power supply. The system requires two power supplies to provide standby power to the system. With a 1 GbE I/O card, only one PSU is required to provide standby power to the system. Table 3-4 and Table 3-5 lists the power supply redundancy modes for a 10 Gb I/O card and a 1 GbE I/O card. Table 3-4. Power Supply Redundancy Modes With a 10 Gb I/O Card Number of Power Supplies Redundancy Mode 1 1+0* 2 2+0 3 2+0 4 2+2 * indicates that the system operates with a limited load. System Configuration Non-redundant configuration with inactive SFP+ ports Non-redundant configuration Non-redundant configuration Redundant configuration 154 Installing System Components

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154
Installing System Components
17
If applicable, install the memory-riser blanks. See "Installing a Memory-
Riser Blank" on page 100.
18
Close the system. See "Closing the System" on page 90.
19
Reconnect your system and peripherals to their electrical outlets, and turn
on the system.
Power Supplies
Your system supports the following power supply modules:
•
1100 W (high output power supply)
•
750 W (energy smart power supply)
When a 10 Gb I/O card is installed, the system must have at least two power
supplies connected to an A/C power supply. The system requires two power
supplies to provide standby power to the system. With a 1 GbE I/O card, only
one PSU is required to provide standby power to the system. Table 3-4 and
Table 3-5 lists the power supply redundancy modes for a 10 Gb I/O card and a
1 GbE I/O card.
Table 3-4.
Power Supply Redundancy Modes With a 10 Gb I/O Card
Number of Power Supplies
Redundancy Mode
System Configuration
1
1+0*
Non-redundant
configuration with inactive
SFP+ ports
2
2+0
Non-redundant
configuration
3
2+0
Non-redundant
configuration
4
2+2
Redundant configuration
* indicates that the system operates with a limited load.