General

Engineer's Note

This 16GB DDR4-2666 RDIMM with ECC and registered signaling is purpose-built for server and virtualization platforms, ensuring data integrity and signal stability in memory-intensive workloads such as in-memory databases and consolidated virtual machines. The dual-rank x8 architecture boosts effective bandwidth through rank interleaving, and the CL19 latency delivers predictable performance ideal for dense, mission-critical enterprise deployments.

Technical Specs & Insights

1. ECC error correction actively detects and corrects single-bit memory faults, preventing silent data corruption in mission-critical databases and financial transactions.
2. Registered signal buffering stabilizes high-density memory configurations, enabling seamless scaling to hundreds of gigabytes for large-scale virtualization hosts.
3. Dual Rank x8 organization interleaves memory accesses across two ranks per channel, boosting bandwidth saturation and sustaining throughput during heavy multi-tenant workloads.
4. 16GB capacity per module strikes a practical density balance, allowing dense population in 2U servers to maximize VM instance counts without exhausting budget or DIMM slots.
5. DDR4-2666 speed delivers a reliable bandwidth floor for concurrent data streams, keeping latency-sensitive microservices responsive even under full system load.

Why These Specs Matter

The Samsung M393A2K43DB2-CTD is a 16 GB DDR4-2666 Registered DIMM engineered for server environments where data integrity and uptime are non-negotiable. In virtualized clusters hosting dozens of VMs, a single undetected memory bit-flip can corrupt critical transactions or crash entire services. The integrated ECC technology continuously detects and corrects such errors, protecting your financial databases and customer records from silent data corruption. Its registered buffer stabilizes command and address signals, enabling you to fully populate all memory channels without signal degradation—crucial when consolidating heavy workloads onto one node. The dual-rank x8 organization interleaves banks for higher bandwidth, directly accelerating in-memory databases like SAP HANA where real-time analytics require instant data retrieval. Operating at a low 1.2 V, this module also reduces power consumption and cooling cost across your server rack. Whether you are running a latency-sensitive database farm or a dense virtualisation platform, this RDIMM delivers the reliable performance and operational efficiency that your business-critical applications demand.

Endurance & Reliability

General Virtualization
Deploy these 16GB RDIMMs in balanced quantities to match your hypervisor's memory overcommit ratio. For a typical dual-socket server hosting 20–30 light-to-medium VMs, populate six to eight modules per CPU (12–16 sticks total) to provide 192–256 GB of available capacity, keeping DIMMs evenly distributed across memory channels for optimal bandwidth.

In-Memory Database
Maximize capacity while preserving data integrity with ECC Registered DIMMs. For datasets approaching 1 TB, fully populate a 24-slot server with these 16 GB modules to reach 384 GB, or scale horizontally with multiple nodes. Use identical dual-rank DIMMs in every channel to maintain symmetric access latencies and avoid performance penalties from unbalanced configurations.

High-Performance Computing (HPC)
Configure memory for peak bandwidth by installing one DIMM per channel (1DPC) on all available channels—typically eight modules per socket on modern platforms. This yields 128 GB per node with maximum throughput, ideal for simulation and modeling workloads. For capacity-hungry HPC jobs, step up to two DIMMs per channel with the same dual-rank x8 RDIMMs, accepting a slight latency trade-off for a larger memory footprint.

Verified Compatibility

This rigorously tested server memory is compatible with Dell PowerEdge R760, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650, and more.

FAQ