General

Engineer's Note

This 16GB DDR4-2666 Registered ECC DIMM is purpose-built for server platforms handling virtualization and in-memory databases, where the ECC error correction and registered signal buffering ensure data integrity and stability under sustained heavy loads. Its single-rank configuration at CL19 timing optimizes command rate efficiency, making it an ideal fit for dense memory configurations in enterprise-grade storage or compute nodes.

Technical Specs & Insights

1. ECC protection silently corrects single-bit errors in real time, preserving data integrity for mission-critical workloads and eliminating the risk of silent data corruption.
2. Registered signal buffering stabilizes command and address lines under heavy memory loads, enabling dependable operation across fully populated server banks.
3. A 16 GB capacity per module delivers the density sweet spot for virtualization hosts, allowing more VMs to run concurrently without memory contention.
4. DDR4-2666 speed provides generous bandwidth per channel, accelerating in-memory databases and real-time analytics where every microsecond counts.
5. Single-rank construction reduces electrical loading on the memory bus, improving signal integrity and making it easier to run multiple DIMMs per channel in dense rack deployments.

Why These Specs Matter

In enterprise computing, unplanned downtime or data corruption is simply unacceptable. The MTA18ASF2G72XF1Z-2G6V21ABSGD is engineered as a server-grade DDR4 DIMM, and its four defining characteristics directly counter the real risks your infrastructure faces. Its Error-Correcting Code (ECC) automatically detects and corrects single-bit memory errors caused by cosmic radiation or electrical noise, preserving data integrity for in-memory databases like SAP HANA where a flipped bit could silently corrupt financial transactions. The Registered signal buffer stabilizes high-capacity memory channels, so when you populate a virtualization cluster with hundreds of VMs, the memory controller drives clean signals across all 288 pins without the electrical loading that triggers cryptic crashes during live migrations. Operating at 2666MHz with a CAS latency of 19 in a single-rank configuration, this module delivers predictable, low-latency bandwidth. In a dense VMware or Hyper-V host, consistent single-rank performance avoids the interleaving penalties that can throttle database query responses under concurrent load, ensuring your virtualized workloads meet strict SLAs without expensive troubleshooting.

Endurance & Reliability

The module is a 16GB Registered ECC DDR4-2666 DIMM (single-rank), designed for reliable server memory expansion.

General Virtualization
For a dual-socket server with eight memory channels per CPU, populate each channel with one 16GB DIMM to achieve 128GB per socket (256GB total) while maintaining maximum 2666MHz speed. This balanced configuration supports dozens of virtual machines without rank-mixing penalties. To scale, add a second DIMM per channel for 512GB total, though speed may throttle if all slots are filled.

In-Memory Database
In-memory databases need low latency and high capacity. Fill every memory channel with a single 16GB single-rank DIMM for 128–256GB per CPU, preserving full 2666MT/s data rate. Single-rank modules minimize electrical loading, reducing access latency for large working sets. For extreme capacity, install two DIMMs per channel, but prioritize populating all channels first to avoid speed degradation.

High-Performance Computing (HPC)
HPC workloads demand peak bandwidth. Install exactly one 16GB DIMM per channel (6–8 channels typical) to maintain symmetric multi-channel operation at 2666MHz, yielding 96–128GB per CPU. Avoid mixing ranks or omitting DIMMs to prevent NUMA imbalances and bandwidth loss under parallel computation.

Verified Compatibility

Rigorously tested, compatible with Dell R750, HPE DL380 Gen10, Lenovo SR650 V2 and more.

FAQ