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Dell R420, E18S001 Sample Memory Configurations, Memory Optimized Independent Channel Mode

Models: E18S E18S001 R420

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Memory Optimized (Independent Channel) Mode

This mode supports SDDC only for memory modules that use x4 device width and does not impose any specific slot population requirements.

Memory Sparing

NOTE: To use memory sparing, this feature must be enabled in the System Setup.

In this mode, one rank per channel is reserved as a spare. If persistent correctable errors are detected on a rank, the data from this rank is copied to the spare rank and the failed rank is disabled.

With memory sparing enabled, the system memory available to the operating system is reduced by one rank per channel. For example, in a system with three 8 GB dual-rank DIMMs, the available system memory is: 1/2 (ranks/ channel) × 3 (DIMMs) × 8 GB = 12 GB, and not 3 (DIMMs) × 8 GB = 24 GB.

NOTE: Memory sparing does not offer protection against a multi-bit uncorrectable error.

NOTE: Both Advanced ECC/Lockstep and Optimizer modes support Memory Sparing.

Memory Mirroring

Memory Mirroring offers the strongest DIMM reliability mode compared to all other modes, providing improved uncorrectable multi-bit failure protection. In a mirrored configuration, the total available system memory is one half of the total installed physical memory. Half of the installed memory is used to mirror the active DIMMs. In the event of an uncorrectable error, the system will switch over to the mirrored copy. This ensures SDDC and multi-bit protection.

Memory installation guidelines:

NOTE: The first memory channel for each processor (Channel 1) is disabled and not available for Memory Mirroring.

•Memory channels 2 and 3 must be populated.

•Memory modules must be identical in size, speed, and technology.

•DIMMs installed in memory sockets with white release tabs must be identical and similar rule applies for sockets with black release tabs. For example, DIMMs installed in sockets A2 and A3 must be identical.

Sample Memory Configurations

The following tables show sample memory configurations that follow the appropriate memory guidelines stated in this section.

NOTE: 16 GB quad-rank RDIMMs are not supported.

NOTE: 1R, 2R, and 4R in the following tables indicate single-, dual-, and quad-rank DIMMs respectively.

Table 1. Memory Configurations — Single Processor

System Capacity

DIMM Size (in

Number of

Organization and

DIMM Slot Population

(in GB)

GB)

DIMMs

Speed

 

 

 

 

 

 

2

2

1

1R x8, 1333 MT/s

A1

 

 

 

1R x8, 1600 MT/s

 

4

2

2

1R x8, 1333 MT/s

A1, A2

 

 

 

1R x8, 1600 MT/s

 

10

2

5

1R x8, 1333 MT/s

A1, A2, A3, A4, A5

 

 

 

1R x8, 1600 MT/s

 

12

4

3

1R x8, 1333 MT/s

A1, A2, A3

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Dell R420, E18S001 owner manual Sample Memory Configurations, Memory Optimized Independent Channel Mode
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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.