Hot Spare Feature, Removing a Redundant Power Supply

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 underSoftware → Systems Management → Dell Remote Access Controllers , at dell.com/support/ manuals.

Removing A Redundant 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.

1.Disconnect the power cable from the power source.

2.Disconnect the power cable from the power supply and remove the straps that bundle and secure the system cables.

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.

3.Press the release latch and pull the power supply straight out to release it from the power distribution board and clear the chassis.

E18S, E18S001, R420 specifications

The Dell E18S001, E18S, and R420 are notable products within Dell's extensive portfolio, catering to diverse computing needs, ranging from high-performance business applications to gaming and creative workloads.

The Dell E18S001 is designed with portability in mind, making it an ideal choice for professionals who need to work on-the-go. It boasts a sleek design with a lightweight frame, making it easy to transport. Powered by the latest Intel processors, the E18S001 offers exceptional performance for multitasking and running resource-intensive applications. With a vibrant display, users enjoy sharp graphics and vivid colors, perfect for graphic design or media consumption. Furthermore, it supports ample RAM and storage options, ensuring users can store important files and run multiple applications smoothly.

The E18S model focuses on delivering a balanced performance, supporting both business and everyday tasks. It features a durable build that can withstand daily wear and tear, making it suitable for office environments. This model is equipped with advanced connectivity options, including USB-C and HDMI ports, enabling seamless integration with various peripherals. Enhanced security features, such as a fingerprint reader, ensure that sensitive information remains protected, making it an attractive choice for corporate users.

On the other hand, the Dell R420 is a powerful server designed for enterprise-level performance. It is compatible with the Intel Xeon processor family, which is known for its reliability and efficiency. The R420 supports a high capacity of memory and offers flexible storage configurations to meet the demands of virtualized workloads and data-intensive applications. It also incorporates advanced management tools, allowing IT administrators to monitor and manage the system effectively. With its energy-efficient design, the R420 helps reduce operational costs while maintaining powerful performance.

Across these products, Dell emphasizes reliability, innovation, and user-friendly features. Each model comes equipped with state-of-the-art thermal management systems to ensure optimal performance and longevity. Additionally, Dell’s commitment to customer service and extensive warranty options further enhance the value of their products. From dynamic workstation needs to robust server requirements, the Dell E18S001, E18S, and R420 stand out as versatile solutions for a range of users.