Dell

7.5.2Mirroring

For mirroring, the M910 will support 2P/4P configurations with 32 DIMMs only. When mirroring is enabled, only half of the physical memory will be visible to the system software. A full copy of the memory is maintained, and in the event of an uncorrectable error, the system will switch over to the mirrored copy. In 2P mode, the mirroring will be inter-node with hemisphere mode enabled. In this case, the memory controller (MBox) of CPU1 is mapped to the corresponding MBox of CPU2. The figure below depicts the mirroring logic for 2P configurations. A, B, C and D represent the DIMM socket groups.

A

C

DIMM8

DIMM7

DIMM6

DIMM5

DIMM4

DIMM3

DIMM2

DIMM1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DIMM8

DIMM7

DIMM6

DIMM5

DIMM4

DIMM3

DIMM2

DIMM1

 

 

 

 

 

 

 

 

MBOX0MBOX0

CPU1

CPU2

MBOX1

MBOX1

DIMM1

DIMM2

DIMM3

DIMM4

DIMM5

DIMM6

DIMM7

DIMM8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DIMM1

DIMM2

DIMM3

DIMM4

DIMM5

DIMM6

DIMM7

DIMM8

 

 

 

 

 

 

 

 

D

B

Figure 5. PowerEdge M910 2P Mirroring

For 4-processor configurations, the PowerEdge M910 will also support mirroring in the inter-socket mode (note that intra-socket is not possible in 4P because each CPU has only one MBox connected to memory buffers). In this 4P case, the memory on CPU1 will be mirrored with memory on CPU3, while memory on CPU2 is mirrored with memory on CPU4. Figure 6 depicts the mirroring logic for 2P configurations. A,B,C and D represent the DIMM socket groups.

A

C

DIMM1 DIMM2 DIMM3 DIMM4 DIMM5 DIMM6 DIMM7 DIMM8

DIMM1 DIMM2 DIMM3 DIMM4 DIMM5 DIMM6 DIMM7 DIMM8

MBOX0MBOX0

CPU1

CPU2

MBOX1

MBOX1

MBOX0MBOX0

CPU3

CPU4

MBOX1

MBOX1

DIMM1

DIMM2

DIMM3

DIMM4

DIMM5

DIMM6

DIMM7

DIMM8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DIMM1

DIMM2

DIMM3

DIMM4

DIMM5

DIMM6

DIMM7

DIMM8

 

 

 

 

 

 

 

 

B

D

Figure 6. M910 4P Mirroring

Dell PowerEdge M910 Technical Guide

23

Page 24
Image 24
Dell manual PowerEdge M910 2P Mirroring

M910 specifications

The Dell M910 is a powerful and versatile rack server designed for high-performance computing and data-intensive applications. This server is particularly well-suited for organizations looking to optimize their IT infrastructure for demanding workloads. It boasts an array of features, technologies, and characteristics that make it a reliable choice for enterprises seeking robust performance and scalability.

At the heart of the Dell M910 is its ability to support multi-core Intel Xeon processors. This technology allows the server to handle multiple tasks simultaneously, making it ideal for virtualization, database management, and other resource-heavy applications. The M910's processor options deliver a significant increase in performance, enabling businesses to run the latest software efficiently without bottlenecks.

In terms of memory, the M910 offers substantial capacity and speed, supporting up to 1.5TB of DDR3 RAM across 18 DIMM slots. This extensive memory complements the processing capabilities, ensuring that applications run smoothly and that users experience minimal latency. Coupled with advanced memory technologies, the M910 can easily handle large datasets and complex computations.

Another standout feature of the Dell M910 is its storage capabilities. The server supports a range of hard drives and solid-state drives, allowing organizations to tailor their storage solutions to meet their unique needs. With multiple drive configurations, including RAID options, businesses can ensure data redundancy and improve access speeds, crucial for mission-critical applications.

The design of the M910 emphasizes ease of management and maintenance. Dell's OpenManage systems management tools provide comprehensive monitoring and control, allowing IT administrators to easily manage server health, performance, and security. This feature streamlines the maintenance process, reducing downtime and promoting efficiency.

Moreover, the M910 is built with energy efficiency in mind. Utilizing advanced power management technologies, it not only reduces overall power consumption but also helps organizations lower their operational costs. This is increasingly important for businesses aiming to minimize their environmental footprint while maintaining high performance.

In conclusion, the Dell M910 is an exemplary rack server that combines powerful processing capabilities, extensive memory options, versatile storage configurations, and advanced management tools. With its focus on performance, scalability, and reliability, it meets the needs of modern enterprises and positions them well for future growth. Whether for virtualization, data analysis, or other demanding workloads, the Dell M910 proves to be a formidable choice for organizations aiming to leverage technology effectively.