Dell EMC Storage NX3230, Руководство пользователя

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Spare feature is disabled. When the Hot Spare feature is enabled, one of the PSUs will be put into standby when system
utilization is low in order to maximize efficiency.
註
: If two PSUs are used, they must be of the same maximum output power.
註
: 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 turn on.
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 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, then the redundant PSU is switched to the active state.
• If the load on the active PSU falls below 20 percent, 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 about iDRAC settings, see the Integrated Dell
Remote Access Controller User’s Guide available at Dell.com/idracmanuals .
Removing the power supply unit blank
Install the power supply unit (PSU) blank only in the second PSU bay.
事前準備作業
警示
:
許多維修僅可由獲得認可的維修技術人員來完成。 您 只能依照 產 品說明文件中的授權說明或在線上或電話服務和支援團隊
的指導下，執行故障排除和簡單的維修。由未經
Dell
授權的維修造成的損壞不在保固範圍之內。請閱讀並遵循隨 產 品寄送的安
全指示。
Follow the safety guidelines listed in the Safety instructions section.
步驟
If you are installing a second power supply unit (PSU), remove the PSU blank in the bay by pulling the blank outward.
警示
: To ensure proper system cooling, the PSU blank must be installed in the second PSU bay in a non-redundant
configuration. Remove the PSU blank only if you are installing a second PSU.
94 Installing and removing system components