Cisco 15-109547-01 256GB DDR5 4800MHz ECC Reg DIMM Server Memory

Description

The Cisco 15-109547-01 (often cross-referenced as UCSX-MR256G8RE1) is an ultra-high-density DDR5 memory module designed for mission-critical Cisco Unified Computing System (UCS) environments. It is specifically engineered to support high-performance computing, large-scale virtualization, and memory-intensive database workloads.

Technical Specifications

Key Performance Features

3DS Stacking Technology

To achieve a 256GB capacity on a single module, Cisco utilizes 3D Stacking (3DS) with Through-Silicon Via (TSV). This allows the vertical stacking of DRAM dies, providing massive memory density without increasing the physical slot requirements of the server.

Integrated Power Management (PMIC)

As a DDR5 module, it features an on-DIMM Power Management Integrated Circuit (PMIC). This architectural shift from the motherboard to the RAM itself results in:

• Highly stable power delivery for high-capacity chips.

• Reduced electrical noise.

• Improved overall energy efficiency in dense server racks.

Advanced Reliability (RAS) Features

• Registered Clock Driver (RCD): Offloads electrical stress from the CPU’s memory controller, allowing for stable operation even when all server memory slots are populated.

• ECC (Error-Correcting Code): Protects against single-bit errors and identifies multi-bit errors, preventing system crashes and data corruption in enterprise environments.

• On-Die ECC: Provides an additional layer of internal error correction within the DRAM chips themselves.

Compatibility Note

This module is specifically qualified for Cisco’s latest generation of UCS M7 platforms. It is primarily used in:

• Cisco UCS X-Series: X210c M7 and X410c M7 Compute Nodes.

• Cisco UCS C-Series: C220 M7 and C240 M7 Rack Servers.