NOTE:
For more information, see the Technical specifications section.
CAUTION:
If two PSUs are installed, both the PSUs must have the Extended Power Performance (EPP)
label. Mixing PSUs (even the PSUs that have the same power rating) from previous generations of Precision
workstation is not supported. This results in a PSU mismatch condition or failure to turn the system on.
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 sleep mode 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.
Hot spare feature
Your system supports the hot spare feature that significantly reduces the power overhead associated with 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
Dell.com/idracmanuals
.
Trusted platform module
The Trusted Platform Module (TPM) is used to generate and store keys, protect or authenticate passwords, and create
and store digital certificates. The Intel’s TXT (Trusted Execution Technology) functionality along with Microsoft’s Platform
Assurance feature in Windows Operating System is supported. TPM can also be used to enable the BitLocker hard drive
encryption feature in Windows Operating System.
The TPM chip is on the Plug-in Module (PIM) and bound only to one system board.
The system board has a connector for the plug-in module, and it is factory-installed.
Figure 35. Trusted platform module
There are four types of TPM chip options:
Technology and components
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