General

Engineer's Note

This is a server-class DDR3 Registered ECC memory module optimized for enterprise environments. It is ideally suited for virtualization hosts and in-memory databases where the Registered signal type ensures stability under heavy load configurations, while the ECC and Dual Rank x4 organization deliver robust data integrity and efficient interleaving for sustained throughput.

Technical Specs & Insights

1. ECC protection continuously detects and corrects single-bit errors, safeguarding transactional data integrity for mission-critical database and financial workloads.
2. Registered signal buffering stabilizes command and address lines across fully loaded server nodes, ensuring reliable operation even with high-density memory configurations.
3. Dual Rank x4 organization interleaves access across rank pairs, maximizing channel utilization and sustaining high throughput under heavy virtualization and container orchestration.
4. 16 GB capacity per module provides ample memory headroom for dense virtual machine consolidation, allowing more guest instances per physical host without resorting to disk swapping.
5. 1866 MHz speed delivers robust memory bandwidth, accelerating real-time analytics and in-memory caches that demand rapid data staging between storage and processor.

Why These Specs Matter

When your virtualization cluster hosts dozens of mission-critical VMs, a single undetected bit flip in memory can corrupt financial transactions or patient records silently. The Samsung M393B2G70BH0-CMAQ8E 16GB DDR3-1866 RDIMM eliminates that risk with integrated ECC, actively correcting single-bit errors so your hypervisor and guests maintain absolute data integrity around the clock. In a dense VMware or Hyper-V environment, registered memory is equally vital: the onboard register buffers address and command signals, dramatically reducing electrical loading on the CPU memory controller. This allows you to populate all channels with high-capacity Dual Rank x4 modules without sacrificing stability—crucial when scaling to 128GB or more for large in-memory databases like SAP HANA. At 1866MHz with a tight CL13 latency, the module accelerates random access patterns that exhaust CPU caches, directly improving query response times and transaction throughput. For your database farm or cloud orchestration layer, this RDIMM means fewer crash risks, consistent performance under maximum load, and headroom to consolidate more tenants onto each server without compromising reliability.

Endurance & Reliability

General Virtualization
For a hypervisor hosting multiple VMs, install one 16GB RDIMM per memory channel to keep the full DDR3-1866 speed and maintain balanced population. A typical dual‑socket server with four channels per CPU delivers 128GB using eight modules, which comfortably supports 20–30 moderate virtual machines without oversubscribing memory.

In-Memory Database
In-memory databases like Redis or SAP HANA demand capacity above all. Populate every DIMM slot with 16GB Registered ECC modules, even if 2DPC forces a speed drop to 1333/1600 MT/s—capacity trumps frequency for large working sets. A dual‑socket platform with 24 slots can reach 384GB, enabling real‑time analytics while ECC safeguards data integrity.

High-Performance Computing (HPC)
HPC workloads prioritize bandwidth. Use a single 16GB RDIMM per channel across all available channels, avoiding 2DPC to maintain the rated 1866 MT/s. A dual‑socket node with eight channels delivers 128GB of high‑bandwidth memory, ideal for CFD or simulation codes that stream large arrays. Match per‑channel population to core counts if bandwidth-per-core becomes a limiting factor.

Verified Compatibility

Rigorously tested server memory, verified compatible with Dell PowerEdge R720/R620, HPE DL380p Gen8, Lenovo x3650 M4, Cisco UCS C220 M3.

FAQ