General

Engineer's Note

This DDR4-2400 VLP RDIMM with ECC and Registered signaling is purpose-built for server platforms, excelling in virtualized environments and memory-intensive workloads like in-memory databases where data integrity and sustained stability are paramount. Its dual-rank x8 organization and low-profile form factor maximize capacity density and thermal clearance in dense rack deployments, while the ECC and registered design ensure reliable, error-corrected signal integrity under heavy multi-DIMM loads.

Technical Specs & Insights

1. ECC memory detects and corrects single-bit errors on the fly, safeguarding data integrity for transactional databases and preventing silent corruption during critical financial processing.
2. Registered buffer technology reduces the electrical load on the memory controller, enabling stable operation when all channels are fully populated in large-scale virtualization hosts.
3. Dual Rank x8 organization leverages bank-level parallelism to sustain high bandwidth, accelerating the concurrent data access patterns typical of in-memory analytics.
4. The Very Low Profile RDIMM design reduces module height to improve clearance and airflow in 1U and blade servers, directly enhancing thermal reliability in dense data-center racks.
5. A 16GB capacity per module delivers an efficient building block for hyper-converged infrastructure, maximizing virtual machine density while keeping cost-per-gigabyte predictable.

Why These Specs Matter

This Samsung VLP RDIMM (M392A2K43BB0-CRC) is purpose-built for server environments demanding uncompromising uptime and density. Four defining characteristics tackle real operational pain points directly. ECC error correction actively eliminates single-bit flip risks; in a virtualization cluster, one silent memory error can corrupt guest VMs or the hypervisor itself, triggering cascading failures—ECC safeguards data integrity so your multi-tenant services remain continuously available. The Registered buffer offloads the memory controller, enabling you to fully populate all DIMM slots with 16GB modules without signal degradation, which means confidently maximizing memory capacity per server to host more virtual machines. Dual Rank x8 interleaving then boosts sustained bandwidth: for an in-memory database like Redis or SAP HANA, this translates directly into faster query responses and higher transactional throughput under peak loads. Finally, the Very Low Profile form factor minimizes airflow obstruction inside dense 1U and blade chassis, enhancing cooling efficiency and preventing thermal throttling. This keeps your database clusters and virtualized workloads performing reliably around the clock while extending hardware lifespan, turning a standard upgrade into a strategic advantage for your infrastructure.

Endurance & Reliability

General Virtualization
Populate all memory channels symmetrically to maximize bandwidth for multiple VMs. For a dual-socket server with six channels per CPU, install twelve 16 GB VLP RDIMMs (192 GB total) using one DIMM per channel (1DPC). This balances capacity and speed at the rated 2400 MHz, avoiding performance drops from higher ranks per channel.

In-Memory Database
Prioritize capacity while preserving data integrity with ECC. Fill every available slot with these 16 GB dual-rank RDIMMs, even if 2DPC slightly limits frequency. For a typical server, 24 modules (384 GB) provide a large in-memory dataset. The VLP form factor aids cooling in dense 1U nodes where databases run hot.

High Performance Computing
Emphasize memory bandwidth and latency. Use 1DPC population across all channels to maintain 2400 MHz and CL17 timings. On a dual-socket node with eight channels each, sixteen 16 GB VLP RDIMMs deliver 256 GB of balanced bandwidth. The lower profile helps sustain airflow in tightly packed compute clusters.

Verified Compatibility

Rigorously tested server memory: 16GB DDR4-2400 VLP RDIMM. Compatible with Dell R740, R640, HPE DL380 Gen10, Lenovo SR650.

FAQ