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.

When only one power supply is installed, the power supply configuration is non-redundant (1 + 0). Power is supplied to the system only by the single power supply.

NOTE: If two power supplies are used, they must be of the same type and have 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 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 support.dell.com/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.

NOTE: You may have to unlatch and lift the optional cable management arm if it interferes with power supply removal. For information about the cable management arm, see the system’s rack documentation.

1.Disconnect the power cable from the power source and the power supply you intend to remove and remove the cables from the strap.

2.Press the release latch and slide the power supply out of the chassis.

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Dell T620 owner manual Hot Spare Feature, Removing An AC Power Supply
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T620 specifications

The Dell PowerEdge T620 is a versatile and powerful tower server designed to meet the demands of growing businesses and organizations. Launched as part of Dell’s 12th generation of PowerEdge servers, the T620 combines cutting-edge features, advanced technologies, and robust performance capabilities.

At its core, the T620 supports Intel's Xeon E5-2600 processors, providing exceptional computational power and efficiency. Organizations can choose from a range of CPUs, allowing them to customize their server according to specific workload requirements. The server can accommodate up to two processors, offering a substantial number of cores for multitasking and demanding applications.

One of the standout features of the T620 is its support for a significant amount of memory. It can house up to 768GB of DDR3 RAM across 24 DIMM slots. This ample memory capacity ensures that the server can handle memory-intensive applications with ease, making it suitable for virtualization, database management, and other critical tasks.

The T620 is equipped with several storage options, supporting up to sixteen 2.5-inch or eight 3.5-inch hard drives. This flexibility allows for high storage density and scalability, accommodating various storage configurations depending on the user’s needs. The system also supports both traditional SATA and high-speed SAS drives, making it adaptable for performance or capacity-driven environments.

Networking capabilities in the T620 are advanced, featuring embedded dual Gigabit Ethernet ports for reliable connectivity. This server supports multiple RAID configurations, enhancing data redundancy and performance. Additionally, the inclusion of Dell's iDRAC (Integrated Dell Remote Access Controller) ensures remote management and monitoring capabilities, allowing administrators to operate the server efficiently without being on-site.

The design of the T620 is built with expandability in mind. Its chassis offers flexibility for adding additional components, such as graphics cards and expansion cards, providing ample room for growth as organizational needs evolve.

In summary, the Dell PowerEdge T620 is a robust and flexible tower server that caters to the diverse needs of businesses. Its powerful processors, extensive memory options, versatile storage configurations, and advanced management features make it a reliable choice for companies seeking to enhance their IT infrastructure. The T620 stands out as a solid option for those looking to leverage technology for business success and growth.
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