Storage server RS520-E9-RS12-E

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Product Summary
The RS520-E9-RS12-E is a 2U rack server designed for high-density compute and flexible storage configurations.

• Supports 2nd Gen Intel Xeon Scalable processors with Intel Optane DC persistent memory and Intel Deep Learning Boost.
• Up to 2TB memory capacity via 16 DIMM slots (DDR4-2666MHz, 3DS ECC RDIMM or LRDIMM).
• 12 x 3.5" hot-swap drive bays with support for up to 4 x 2.5" NVMe/SAS/SATA devices.
• Comprehensive management: ASMB9-iKVM and ASUS Control Center (ACC) compatibility.
• Thermal Radar and Auto Fan Control with multiple ambient sensors for CPU, memory and front-panel monitoring.
• Rack-optimized front-parallel CPU and memory layout for efficient airflow.
• Expansion: 6 PCIe slots + 1 OCP slot; OCP 2.0 mezzanine supported.
• Dual onboard M.2 slots (can be configured for PCIe RAID for caching).

Overview
With 16 DIMM slots supporting DDR4-2666MHz 3DS ECC RDIMM or LRDIMM, the server supports up to 2TB of memory for memory‑intensive workloads. The front 12 x 3.5" hot-swap bays provide a flexible combination of 3.5" and 2.5" devices, supporting NVMe, SAS and SATA for software-defined storage configurations.

The platform supports dual onboard M.2 SSDs that can be configured in PCIe RAID to accelerate storage caching. Built for 2nd Gen Intel Xeon Scalable processors, the RS520-E9-RS12-E offers a balance of compute density and I/O throughput, with Intel technologies to assist inference and acceleration tasks.

Smart thermal management uses Thermal Radar and Auto Fan Control with multiple temperature sensors to adjust fan speeds dynamically for improved energy efficiency. The ASMB9-iKVM provides out-of-band management functions (remote BIOS updates, fan control, KVM utilities, video recording and BSOD capture). ASUS Control Center (ACC) enables centralized monitoring and management of multiple systems.

Technical specifications

• Model: RS520-E9-RS12-E
• Brand: ASUS
• Form factor: 2U rack server
• Processor: Supports 2nd Gen Intel Xeon Scalable processors
• Memory: 16 DIMM slots; up to 2TB DDR4-2666MHz (3DS ECC RDIMM or LRDIMM)
• Storage bays: 12 x 3.5" hot-swap bays (supports up to 4 x 2.5" NVMe/SAS/SATA devices)
• Additional storage: 2 x 2.5" hot-swap bays on rear panel; dual onboard M.2 slots (supports PCIe RAID for caching)
• Expansion: 6 x PCIe slots + 1 x OCP expansion slot; OCP 2.0 mezzanine supported
• Management: ASMB9-iKVM module; compatible with ASUS Control Center (ACC)
• Thermal: Thermal Radar with multiple ambient sensors and Auto Fan Control
• Design: Rack-optimized front-parallel CPU and memory layout for efficient airflow
• Status: EOL (End of Life) indicator present on product page