AC517143 Dell Vxrail 256GB Pc5-38400 Ddr5-4800mt/s Rdimm Memory

Dell AC517143 VxRail 256GB DDR5 Memory Module

The Dell AC517143 represents a significant advancement in server memory technology, engineered specifically for the demanding environment of VxRail hyper-converged infrastructure. This 256GB DDR5 RDIMM module operates at 4800MT/s with advanced error-correcting code (ECC) and registered design to ensure maximum data integrity and system stability in mission-critical workloads.

Key Specifications

Dell's AC517143 memory module incorporates cutting-edge DDR5 architecture to deliver substantial performance improvements over previous generations. With a massive 256GB capacity on a single module, this memory solution enables higher virtual machine density and improved workload consolidation capabilities within VxRail environments.

Memory Architecture

The module features an 8Rx4 organization with 8 ranks of memory chips, optimized for high-capacity server applications. The 288-pin RDIMM form factor ensures compatibility with Dell PowerEdge servers within VxRail configurations while providing superior signal integrity and thermal characteristics.

DDR5 Technological Advancements

DDR5 technology introduces several key innovations including dual 32-bit sub-channels, improved power management integrated circuits (PMICs) on the module itself, and doubled burst length compared to DDR4. These advancements contribute to the module's 4800MT/s data rate while maintaining stability under heavy computational loads.

RDIMM Architecture Benefits

The Registered DIMM design incorporates register chips between the memory controller and DRAM chips, reducing electrical load on the memory controller and enabling higher module capacities and better signal integrity. This design is particularly beneficial in multi-processor systems with large memory configurations typical in VxRail deployments.

Performance Characteristics

Operating at PC5-38400 classification, the Dell AC517143 delivers a peak transfer rate of 38,400 MB/s per module. The CAS Latency of CL40 represents an optimized balance between speed and stability for enterprise applications, while the 1.10v operating voltage demonstrates improved power efficiency over previous DDR4 generations.

Data Transfer Efficiency

The 4800MT/s data rate enables faster data access for memory-intensive applications including database operations, virtualization, and data analytics. The dual sub-channel architecture of DDR5 allows for more efficient memory access patterns, reducing potential bottlenecks in multi-threaded workloads.

Latency and Timing Parameters

With carefully engineered timing parameters including CL40 latency, this memory module ensures responsive performance while maintaining the reliability standards required for enterprise environments. The registered design helps maintain signal quality even at higher speeds, contributing to overall system stability.

VxRail-Specific Optimization

The AC517143 memory module undergoes rigorous testing and validation specifically for VxRail hyper-converged infrastructure systems. This ensures seamless integration with VxRail's automated lifecycle management and maintains the system's ability to provide predictable performance for virtualized environments and software-defined storage.

Hyper-Converged Infrastructure Compatibility

Designed explicitly for VxRail systems, this memory module supports the unique workload demands of hyper-converged infrastructure, where compute, storage, and networking resources are tightly integrated. The high capacity and reliability of these modules are essential for maintaining VxRail's performance guarantees and availability metrics.

VMware Integration Benefits

As VxRail is built specifically for VMware environments, the AC517143 memory is optimized for vSphere virtualization workloads. The module's characteristics support memory overcommitment features and handle the memory management demands of multiple virtual machines running concurrently on a single host.

Hot-Plug Capabilities

When used in supported VxRail configurations, these memory modules can be serviced without complete system shutdown in certain scenarios. This capability aligns with VxRail's high-availability design principles and supports maintenance operations while minimizing application downtime.

Predictive Failure Analysis

The memory modules work in conjunction with VxRail's monitoring systems to provide early warning of potential memory issues. This predictive capability allows for proactive maintenance scheduling and component replacement before failures impact system performance or availability.

Error Correction and Data Integrity

The Dell AC517143 implements comprehensive error-correcting code (ECC) technology that detects and corrects single-bit errors and detects multi-bit errors. This capability is critical for maintaining data integrity in mission-critical applications and preventing silent data corruption.

ECC Implementation Details

Using advanced ECC algorithms, the memory module can automatically correct errors without impacting system performance or requiring operating system intervention. The ECC functionality operates transparently to applications while providing continuous protection against memory-related data corruption.

Single Device Data Correction (SDDC)

The module supports SDDC capabilities, which provide additional protection against complete memory chip failures. This feature enhances system reliability by allowing continued operation even in the event of a failure in individual memory chips within the module.

Power Efficiency

Operating at 1.10 volts, the DDR5 technology in the AC517143 provides significant power efficiency improvements compared to DDR4 modules. This reduced power consumption contributes to lower overall system power requirements and reduced heat generation within the VxRail chassis.

On-DIMM

The integrated Power Management IC (PMIC) on the DDR5 module distributes power more efficiently to the memory chips, enabling better power delivery and reduced noise. This architecture represents a fundamental shift from motherboard-based power management to module-based control.

Voltage Regulation Efficiency

The PMIC provides more precise voltage regulation to the memory chips, improving signal integrity while reducing power consumption. This localized power management contributes to the module's ability to maintain stable operation even under fluctuating load conditions.

Wide Compatibility

The AC517143 memory module undergoes extensive compatibility testing with specific VxRail models and configurations. This validation ensures that the memory operates correctly within the VxRail ecosystem and maintains compatibility with all system features and management capabilities.

Supported VxRail Platforms

This memory module is validated for use in specific VxRail generations and models as defined by Dell's compatibility matrices. Administrators should consult the most recent compatibility guides to ensure support for their specific VxRail configuration and generation.

Generation-Specific Considerations

Different VxRail generations may have specific memory requirements or capabilities. The AC517143 is designed to meet the requirements of supported platforms while leveraging the full performance potential of each system generation.

Use Cases and Workload Optimization

The high-capacity, high-performance characteristics of the AC517143 memory module make it suitable for various demanding workloads commonly deployed on VxRail infrastructure, including database applications, virtual desktop infrastructure, and data analytics platforms.

Memory-Intensive Applications

Applications such as in-memory databases, large-scale virtualization environments, and data analytics platforms benefit significantly from the high capacity and bandwidth provided by these memory modules. The 256GB capacity per module enables substantial in-memory processing capabilities.

Virtual Machine Density Optimization

The memory capacity directly impacts the number of virtual machines that can be supported on a single VxRail node. With 256GB modules, organizations can achieve higher consolidation ratios while maintaining performance isolation between workloads.

Database Performance Considerations

Database workloads, particularly those with large buffer pool requirements, benefit from the increased memory capacity and bandwidth. The ECC protection ensures data integrity for critical database operations and transactions.

Real-World Performance Considerations

While theoretical bandwidth is important, real-world performance depends on multiple factors including memory controller efficiency, workload characteristics, and system configuration. The AC517143 is optimized for the typical access patterns found in virtualized enterprise environments.