835955-S21 HPE 16GB DDR4 ECC Registered RAM

HPE 835955-S21 16GB DDR4 2666MHz PC4-21300 2Rx8 RDIMM 288-Pin ECC Memory Overview

The HPE 835955-S21 16GB DDR4 2666MHz PC4-21300 2Rx8 RDIMM 288-Pin ECC Memory module is a high-quality, enterprise-grade memory solution built to enhance the reliability and speed of HPE servers and data center infrastructures. It provides an optimal balance of high bandwidth, energy efficiency, and system stability. Designed specifically for HPE ProLiant and Apollo series servers, this RDIMM memory module ensures peak performance across a wide range of workloads, from virtualization and data analytics to high-performance computing and database applications. With ECC error correction, a dual-rank architecture, and DDR4 technology, it delivers exceptional processing efficiency and dependable operation for modern IT environments.

DDR4 2666MHz High-Speed Performance

The HPE 835955-S21 memory module operates at a frequency of 2666MHz, offering a substantial performance upgrade over earlier generations of DDR3 memory. With higher bandwidth and lower latency, this DDR4 module ensures faster data transfer rates, improving overall server responsiveness and computing throughput. The PC4-21300 speed rating ensures smooth handling of data-intensive tasks, enabling servers to manage large datasets, run multiple virtual machines, and process demanding workloads with ease.

Enhanced Data Bandwidth for Enterprise Workloads

Enterprise applications rely heavily on memory performance, especially in virtualization, high-performance computing, and database-driven environments. The 835955-S21 module offers wide memory bandwidth, allowing simultaneous data transactions without bottlenecks. This ensures consistent performance during peak utilization, maintaining stability for mission-critical operations like ERP, AI processing, and big data analytics.

Data Access

Latency plays a significant role in determining application performance and system responsiveness. The HPE 835955-S21 module minimizes delay in data access by leveraging advanced DDR4 architecture. This reduction in latency enables smoother execution of workloads, optimized I/O performance, and faster response times for applications requiring real-time data processing.

Data Integrity

Error-Correcting Code (ECC) technology is an integral feature of the HPE 835955-S21 memory. It detects and corrects single-bit errors, protecting data from corruption and reducing the risk of system crashes. ECC memory is essential in enterprise and mission-critical environments, ensuring high reliability and maintaining data accuracy during continuous server operation.

Registered DIMM (RDIMM) Architecture and Benefits

The 835955-S21 memory module is a Registered DIMM (RDIMM), designed with a register that buffers control signals between the memory controller and DRAM chips. This buffering reduces electrical load, allowing servers to support more memory modules while maintaining stable operation. RDIMM architecture enables higher scalability, increased performance, and superior reliability for multi-socket server configurations.

Scalability for Enterprise Environments

As enterprise workloads expand, scalability becomes a priority. The HPE 835955-S21 16GB RDIMM provides scalable performance through its 2Rx8 dual-rank design, enabling high-density memory configurations across multiple channels. This scalability ensures that businesses can expand their server capacity seamlessly as their data and processing needs grow.

Stable Signal Transmission and Reduced Interference

With RDIMM buffering, the HPE 835955-S21 maintains strong and stable signal integrity between the CPU and memory modules. This reduces the risk of interference, data corruption, or performance degradation. As a result, it delivers dependable performance under sustained heavy workloads, particularly in environments that demand consistent uptime and high computing accuracy.

HPE Server Systems

The 835955-S21 module is engineered to integrate flawlessly with HPE server platforms, including HPE ProLiant Gen10 and Apollo systems. It is validated for compatibility, ensuring smooth installation and optimal performance without the need for additional configuration. HPE’s quality assurance and testing guarantee reliable operation within HPE ecosystems, providing businesses with peace of mind and consistent system support.

Reduced Consumption

By operating at a lower voltage than previous-generation memory, the 835955-S21 minimizes energy draw without sacrificing speed or performance. This results in lower power bills and reduced environmental impact, making it a cost-effective and eco-friendly solution for large-scale data centers managing hundreds of memory modules simultaneously.

Thermal Stability Under Heavy Loads

Efficient thermal behavior ensures consistent performance even during sustained, high-load operations. The HPE 835955-S21 module is built to maintain stable temperatures in high-density server racks, allowing servers to run efficiently 24/7. This thermal consistency enhances long-term reliability, reducing the likelihood of overheating and hardware failure.

Improved Data Center

Lower heat output translates directly into reduced cooling requirements. The HPE 835955-S21 helps optimize airflow and maintain cooler server environments, decreasing strain on data center cooling systems. This improves system stability while reducing maintenance costs associated with temperature management.

Memory Architecture and Design Advantages

The dual-rank, 2Rx8 architecture of the HPE 835955-S21 ensures optimal balance between capacity, bandwidth, and stability. Each rank provides a separate data path, improving parallelism and access speed. This structure allows multiple memory transactions to occur simultaneously, improving data throughput and supporting multi-threaded applications efficiently.

Dual-Rank Benefits for Performance

Dual-rank configurations, like that of the 835955-S21, allow servers to handle multiple data requests more efficiently than single-rank modules. This improves throughput and supports demanding workloads where performance consistency is critical. Dual-rank memory also enhances reliability in systems with multiple active channels.

Channel Interleaving

Channel interleaving distributes data evenly across multiple channels, improving performance by maximizing memory access efficiency. The HPE 835955-S21 fully supports interleaving, reducing access latency and increasing effective memory bandwidth. This feature is particularly beneficial in multi-channel server configurations handling high-volume data operations.

288-Pin RDIMM for Reliable Connectivity

The 288-pin connector design of the HPE 835955-S21 ensures stable communication between the memory module and the motherboard. The pin layout supports high-speed data transmission while minimizing interference, providing reliable connectivity and optimal signal flow for server performance.

Enterprise-Level Reliability

Reliability is one of the primary considerations in enterprise memory design. The ECC-enabled HPE 835955-S21 module safeguards mission-critical data by identifying and correcting memory errors automatically. This feature is vital for maintaining continuous system operation and preventing costly downtime or data corruption in critical workloads.

Continuous Data Protection

ECC technology constantly monitors data integrity, correcting single-bit errors and detecting multi-bit ones before they impact performance. This ensures that enterprise applications run smoothly even under sustained usage, safeguarding the accuracy of sensitive information such as financial records or analytical computations.

Enhanced Fault Tolerance for Data Centers

In large-scale data centers, fault tolerance ensures that servers remain operational despite hardware anomalies. The HPE 835955-S21’s ECC protection enhances fault tolerance, minimizing disruptions caused by transient memory errors. This reliability feature is critical in virtualization, database management, and large-scale analytics operations.

Uninterrupted Performance for Mission-Critical Tasks

Servers equipped with ECC memory, such as the HPE 835955-S21, maintain operational continuity even during memory faults. This capability ensures that mission-critical applications like transaction processing systems, ERP solutions, and cloud platforms remain online, supporting seamless business operations around the clock.

Diverse Server Workloads

The HPE 835955-S21 is optimized for a wide array of enterprise workloads. From virtualization and cloud computing to AI workloads, high-performance databases, and scientific computing, this memory module delivers the performance and dependability required to sustain demanding business processes efficiently.

Database Performance and Real-Time Processing

Databases, particularly those used for real-time analytics or transactional systems, require rapid access to large data volumes. The HPE 835955-S21 module accelerates query processing, reduces bottlenecks, and supports faster data retrieval, providing smoother performance for SQL servers, NoSQL systems, and in-memory databases.

High-Performance Computing Applications

For high-performance computing (HPC) workloads involving simulations, AI training, and scientific modeling, the 835955-S21 provides the stability and speed needed to handle parallel computations. Its high bandwidth and ECC reliability ensure accuracy in data processing, supporting advanced computational environments with consistent performance.

Integration HPE Ecosystems

The HPE 835955-S21 is designed to integrate seamlessly into HPE management ecosystems, allowing administrators to monitor, manage, and optimize memory performance through tools like HPE iLO, HPE OneView, and HPE Insight Control. These management platforms enhance visibility and streamline maintenance operations across multiple servers.

Real-Time Health

HPE’s intelligent management tools provide real-time insight into memory health, usage, and performance metrics. The 835955-S21 supports these monitoring capabilities, allowing IT teams to detect potential issues early, perform predictive maintenance, and ensure peak operational performance across all memory modules.

Predictive Analysis and Fault Prevention

HPE OneView and iLO use predictive analytics to forecast potential component failures. This feature allows data center managers to take proactive measures, reducing downtime and improving hardware lifespan. When paired with ECC error correction, the 835955-S21 offers a comprehensive approach to memory reliability.

Streamlined Deployment and Configuration

The HPE 835955-S21 RDIMM is designed for quick installation and automatic recognition within HPE servers. Its plug-and-play compatibility minimizes configuration time, simplifying memory expansion and server upgrades for enterprises scaling their computing environments.

Next-Generation Computing

Modern IT environments demand scalability and adaptability. The HPE 835955-S21 provides the foundation for next-generation workloads, supporting advanced virtualization, containerization, and high-speed data processing frameworks. It ensures that servers remain capable of handling evolving performance demands without hardware obsolescence.

Long-Term Reliability

HPE’s rigorous testing and validation process ensures that every 835955-S21 module delivers consistent performance throughout its operational lifespan. Combined with manufacturer support and firmware compatibility updates, it provides businesses with a long-term, dependable memory solution suitable for critical enterprise environments.

Maximizing Return on Investment

Upgrading to high-efficiency memory like the HPE 835955-S21 extends the lifespan and performance of existing servers, maximizing hardware ROI. This allows organizations to delay expensive infrastructure overhauls while maintaining competitive processing capabilities in demanding business applications.

Enterprise Assurance

Security and consistency are essential for enterprise IT operations. The HPE 835955-S21 helps maintain secure, stable, and efficient performance across all memory-driven processes. Combined with HPE’s trusted hardware ecosystem, it reinforces infrastructure resilience, minimizes risks of data corruption, and supports strict compliance requirements for corporate and government operations.

Secure System Operation

ECC technology and HPE’s hardware validation process ensure secure data processing, reducing vulnerabilities associated with transient memory faults. This contributes to system integrity, particularly for industries handling sensitive data such as finance, healthcare, and telecommunications.

Consistent and Predictable Performance

Predictability is crucial in enterprise systems. The HPE 835955-S21 ensures consistent memory behavior under variable workloads, maintaining balanced throughput across all server processes. Its dependable performance supports mission-critical applications that cannot afford latency spikes or operational downtime.

Enterprise-Class Quality Assurance

Each HPE 835955-S21 memory module undergoes extensive quality testing and validation, meeting HPE’s enterprise-class standards for reliability, endurance, and interoperability. Businesses deploying these modules can rely on a proven, tested solution that meets stringent operational requirements for data integrity and uptime.