General

Engineer's Note

This Micron 8GB DDR4-2133 RDIMM, featuring ECC and a registered signal type, is engineered for server platforms where data integrity is paramount, making it ideal for virtualization and in-memory databases. Its single-rank x4 configuration reduces electrical loading on the memory bus, enabling stable operation at CL15 latency while maintaining 1.2V power efficiency in dense multi-DIMM deployments.

Technical Specs & Insights

1. ECC protection silently corrects single-bit errors in real time, shielding financial transactions and virtualization workloads from in-memory corruption.
2. Registered buffer technology decouples the command bus from DRAM loading, allowing the server to populate more modules per channel for extreme capacity without signal degradation.
3. Single-rank layout reduces the electrical load on the memory bus, preserving signal integrity and enabling stable operation in fully populated multi-DIMM servers.
4. Modest module capacity fits cost-optimized cloud nodes and container hosts where memory density is balanced against per-socket licensing and TCO.
5. Conservative DDR4 frequency ensures unconditional boot compatibility across mixed-generations of server boards while minimizing uncorrectable thermal drift in dense racks.

Why These Specs Matter

The Micron MTA18ASF1G72PZ-2G1A2KG is a server DDR4 RDIMM designed to eliminate the most critical pain points in data centers. Its ECC protection actively corrects memory errors, preventing silent data corruption that could crash a virtualized host or invalidate a financial transaction in an SAP HANA instance. The registered buffer isolates the memory controller from the DRAM loading, allowing you to fill all 24 DIMM slots in a dual-socket server while maintaining rock-solid stability—essential when consolidating dozens of VMs with VMware or Hyper-V. Operating at just 1.2V, this module slashes energy consumption versus legacy 1.35V DDR3, dramatically reducing operating expenses across hundreds of nodes. Finally, the single-rank x4 organization at 2133MHz delivers predictable low-latency bandwidth, crucial for real-time in-memory caching systems like Redis, ensuring consistent performance even under peak loads. You gain insurance against downtime and a foundation for efficient, scalable infrastructure.

Endurance & Reliability

This is an 8 GB DDR4-2133 ECC Registered RDIMM (single-rank, CL15). It is server-class memory, suited for platforms requiring data integrity and large addressable capacities. The following capacity planning scenarios apply.

General Virtualization
Populate all memory channels symmetrically with identical 8 GB RDIMMs (one DIMM per channel) to maximize bandwidth for multi-VM hosts. For modest consolidation, start with six to eight modules (48–64 GB) and scale by adding matched DIMMs, balancing cost-per-gigabyte against the need for spare capacity during failover or migration.

In-Memory Database
Maximize capacity by fully loading every memory slot with these single-rank DIMMs, often in a two-DIMM-per-channel configuration. This approach helps avoid speed degradation compared to dual-rank modules while reaching hundreds of gigabytes. Complement with memory interleaving and ensure all channels are equally populated for predictable, low-latency access.

High-Performance Computing (HPC)
For bandwidth-bound HPC jobs, install one DIMM per channel to maintain peak 2133 MT/s throughput. When memory capacity per node must scale, move to two DIMMs per channel using these single-rank RDIMMs, as their lighter electrical load often preserves a higher clock speed than dual-rank alternatives, sustaining application performance under heavy floating-point workloads.

Verified Compatibility

Rigorously tested and compatible with Dell PowerEdge R630, HP ProLiant DL380 Gen9, Lenovo System x3650 M5.

FAQ