Dell Poweredge C4130 Dell Owners Manual - Page 79

Hot Spare feature, Removing the power supply unit blank, settings

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NOTE: The PSU 2 slot also functions as the optional 2.5 inch hard drive cage slot. If you install the 2.5 inch hard drive cage in the PSU 2 slot, your system will not support the redundancy feature. NOTE: Platinum PSU is rated for 200 V AC to 240 V AC input only. NOTE: When two identical PSUs are installed, power supply redundancy (1+1 - with redundancy or 2+0 - without redundancy) is configured in system BIOS. In redundant mode, power is supplied to the system equally from both PSUs when Hot Spare is disabled. When Hot Spare is enabled, one of the PSUs will be put into standby when system utilization is low in order to maximize efficiency. NOTE: If two PSUs are used, they must be of the same maximum output power. NOTE: For AC PSUs, use only PSUs with the Extended Power Performance (EPP) label on the back. Mixing PSUs from previous generations of servers can result in a PSU mismatch condition or failure to power on. 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, one of the redundant PSUs is switched to the sleep state. The active PSU supports 100% of the 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 a sleep state, the active PSU can also activate a sleeping PSU. The default PSU settings are as follows: • If the load on the active PSU is more than 50%, then the redundant PSU is switched to the active state. • If the load on the active PSU falls below 20%, 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 on iDRAC settings, see the Integrated Dell Remote Access Controller User's Guide at dell.com/support/home. Removing the power supply unit blank Remove the power supply unit (PSU) blank when you are installing a second PSU or a 2.5 inch hard drive cage in the PSU 2 slot. Prerequisites 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. Ensure that you read the Safety instructions. Steps Remove the PSU blank from the PSU 2 slot by pulling the blank outward. 79

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NOTE:
The PSU 2 slot also functions as the optional 2.5 inch hard drive cage slot. If you install the
2.5 inch hard drive cage in the PSU 2 slot, your system will not support the redundancy feature.
NOTE:
Platinum PSU is rated for 200 V AC to 240 V AC input only.
NOTE:
When two identical PSUs are installed, power supply redundancy (1+1 – with redundancy or
2+0 – without redundancy) is configured in system BIOS. In redundant mode, power is supplied to
the system equally from both PSUs when Hot Spare is disabled. When Hot Spare is enabled, one of
the PSUs will be put into standby when system utilization is low in order to maximize efficiency.
NOTE:
If two PSUs are used, they must be of the same maximum output power.
NOTE:
For AC PSUs, use only PSUs with the Extended Power Performance (EPP) label on the back.
Mixing PSUs from previous generations of servers can result in a PSU mismatch condition or failure
to power on.
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, one of the redundant PSUs is switched to the sleep state. The
active PSU supports 100% of the 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 a sleep state, the active PSU can also
activate a sleeping PSU.
The default PSU settings are as follows:
•
If the load on the active PSU is more than 50%, then the redundant PSU is switched to the active state.
•
If the load on the active PSU falls below 20%, 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 on iDRAC
settings, see the Integrated Dell Remote Access Controller User’s Guide at
dell.com/support/home
.
Removing the power supply unit blank
Remove the power supply unit (PSU) blank when you are installing a second PSU or a 2.5 inch hard drive
cage in the PSU 2 slot.
Prerequisites
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.
Ensure that you read the
Safety instructions
.
Steps
Remove the PSU blank from the PSU 2 slot by pulling the blank outward.
79