General

Engineer's Note

Designed as a DDR4-2666 Registered DIMM with ECC, this 16 GB module is purpose-built for server platforms handling virtualization, in-memory databases, and other mission-critical workloads that demand data integrity and uptime. Its single-rank configuration and registered signal architecture deliver stable electrical loading and enhanced reliability at 1.2 V, while CL19 latency keeps response times predictable under sustained memory pressure.

Technical Specs & Insights

1. DDR4 technology delivers higher memory bandwidth per watt, enabling virtualized data centers to process more transactions with reduced energy overhead.
2. ECC protection transparently corrects single-bit errors, preventing silent data corruption that could crash mission-critical enterprise applications.
3. Registered DIMM buffering stabilizes command signals, allowing fully loaded memory channels for maximum scalability in compute-intensive server nodes.
4. The 16 GB capacity per module increases virtual machine density, supporting more isolated tenants per physical host without sacrificing performance.
5. 2666 MT/s data rate ensures responsive connectivity to large in-memory datasets, accelerating real-time analytics and database queries under heavy load.

Why These Specs Matter

The MTA18ASF2G72XF1Z-2G6V21AB is a server-grade DDR4 memory module purpose-built for mission-critical enterprise environments, and the features on its datasheet translate directly into uptime and performance where they matter most. This is an ECC Registered DIMM, and every specification is there to solve a real server pain point.

When you are running a virtualized cluster with dozens of VMs contending for memory, a single undetected bit-flip can corrupt a database transaction or crash a hypervisor. The integrated ECC engine actively corrects single-bit errors in real time, protecting data integrity without any performance penalty. Meanwhile, the Registered signal buffer may sound technical, but it means you can populate all memory channels with multiple DIMMs per channel without compromising signal stability—absolutely essential for dense VMware or Nutanix hosts that demand 512GB or more of reliable capacity. In an in-memory database like SAP HANA or Redis, that 16GB of capacity operating at a solid 2666MHz with CL19 latency ensures your hot datasets are served with predictable low latency. The 1.2V operating voltage further reduces thermal load and power draw in crowded rack servers, lowering your total cost of ownership. This is not just memory; it is the foundation of your server’s uptime story.

Endurance & Reliability

This memory module is a DDR4-2666 ECC Registered DIMM (RDIMM) with 16 GB capacity and CL19 latency, clearly designed for server platforms. All capacity planning recommendations below assume a typical dual-socket server with eight memory channels per CPU.

General Virtualization
For consolidated VM workloads, balance capacity and channel efficiency. Populate one 16 GB module per channel across all eight channels of each CPU to achieve 128 GB per socket (256 GB total), ensuring maximum memory bandwidth while leaving half of the DIMM slots free for future scaling. Avoid mixing different ranks or speeds—uniform single‑rank RDIMMs such as this module guarantee stable, predictable virtualisation performance.

In-Memory Database
In‑memory databases demand low latency and the largest possible memory footprint. Fully populate all DIMM slots with these 16 GB RDIMMs, aiming for 384 GB to 512 GB per server depending on the board design. The registered ECC technology provides the data integrity required for transactional workloads, while the uniform single‑rank layout minimises electrical loading and maintains consistent CL19 access times under heavy load.

High-Performance Computing
HPC applications are sensitive to memory bandwidth. Configure one 16 GB RDIMM per channel (1DPC) to run at the rated 2666 MT/s without speed degradation. For dual‑socket nodes this yields 256 GB of capacity with full memory interleaving, maximizing throughput for simulation and modelling codes. Keep all modules identical in rank and timing to prevent BIOS downshifting and to sustain reproducible performance across cluster nodes.

Verified Compatibility

Rigorously tested and compatible with Dell PowerEdge R760, HPE ProLiant DL380 Gen10, Lenovo ThinkSystem SR650, and more.

FAQ