Cisco UCS C-Series Rack Servers

Cisco UCS C250 M2 Extended-Memory Rack-Mount Server Data Sheet

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Product Overview

Cisco® UCS C-Series Rack-Mount Servers extend unified computing innovations to an industry-standard form factor to help reduce total cost of ownership (TCO) and increase business agility. Designed to operate both in standalone environments and as part of the Cisco Unified Computing System, the series employs Cisco technology to help customers handle the most challenging workloads. The series incorporates a standards-based unified network fabric, Cisco VN-Link virtualization support, and Cisco Extended Memory Technology. It supports an incremental deployment model and protects customer investments with a future migration path to unified computing.

The Cisco UCS C250 M2 Extended-Memory Rack-Mount Server is a two-socket, two-rack-unit (2RU) rack-mount server featuring patented Cisco Extended Memory Technology (Figure 1). It is designed to increase performance and capacity for demanding virtualization and large-data-set workloads. It also can reduce the cost of smaller memory footprints. This server is built for virtualized workloads in enterprise data centers, service provider environments, and virtual desktop hosting. The system also helps increase performance for large-data-set workloads, including database management systems and modeling and simulation applications. Applications that are memory bound today will benefit from the 384 GB of addressable memory that the Cisco UCS C250 M2 server offers.

Building on the success of the Cisco UCS C250 M1 Extended-Memory Rack-Mount Server, the Cisco UCS C250 M2 server extends the capabilities of the Cisco Unified Computing System with the next generation of Intel processor technology: Intel® Xeon® 5600 series processors. These powerful processors deliver more cores, threads, and cache, all within a similar power envelope, with even faster payback, greater productivity, and better energy efficiency than preceding models. When put into production, Cisco Unified Computing System and Intel Xeon 5600 series processors together offer further reductions in TCO, increased business agility, and another big leap forward in data center virtualization.

Figure 1. Cisco UCS C250 M2 Server


With 48 DIMM slots available, the Cisco UCS C250 M2 server design is unique among two-socket servers based on Intel Xeon 5600 series processors. From a memory-capacity perspective, it can alleviate memory bottlenecks in situations in which costly four-socket servers might otherwise be necessary, helping improve the price-to-performance ratio for running large-memory-footprint applications. From a memory-cost perspective, the server can be populated with low-cost 4-GB DIMMs for a total of up to 192 GB of main memory; this memory configuration delivers a memory footprint that other two-socket, Intel Xeon 5600 series processor–based systems require 16-GB DIMMS to achieve. The server also can be populated with 8-GB DIMMs for a total of up to 384 GB of memory.

These benefits of Cisco Extended Memory Technology can be harnessed by customers when very large memory footprints are required, or when large, low-cost memory footprints are desirable, as in the following examples:

Large virtualized environments can host more or larger virtual machines with the server’s larger memory footprint, and with higher performance in cases in which existing implementations are memory bound.

Database applications will thrive in virtualized and nonvirtualized environments, as the server uses the combination of a large memory footprint and the fastest Intel processors

Traditional high-performance computing (HPC) applications can benefit from the server’s performance and memory footprint, including memory-intensive engineering design automation (EDA) and geophysical modeling applications. EDA applications and oil and seismic applications can now expand beyond the 144-GB memory capacity of other two-socket servers, and the applications can be accelerated with a larger (384 GB) or a more economical (192 GB) memory footprint. Other memory-bound HPC applications are likely to see performance acceleration on a Cisco UCS C250 M2 server.

Enterprise resource planning (ERP) applications can run with improved performance with large data sets in main memory when hosted on the Cisco UCS C250 M2 server.

Features and Benefits

The Cisco UCS C250 M2 server extends Cisco unified computing innovations—including Cisco Extended Memory Technology—to an industry-standard, rack-mount form factor. It is the first rack-mount server available anywhere with a built-in future migration path to unified computing. It increases customer choice by providing unique benefits in a rack-mount server, bringing differentiation and value to what has traditionally been a market with products not optimized to meet the needs of virtualized data centers. Table 1 summarizes the features and benefits of the Cisco UCS C250 M2 server.

Table 1. Features and Benefits



Cisco Extended Memory Technology

Up to 384 GB of main memory using 8-GB DIMMs or 192 GB of main memory with 4-GB DIMMs
Substantially increased memory footprint, increasing performance and capacity for demanding virtualization and large-data-set workloads
Reduced number of servers and decreased licensing costs with higher virtual-to-physical consolidation ratios
48 DIMM slots, offering a more cost-effective memory footprint because smaller-density DIMMs can be substituted for more expensive, higher-density DIMMs

10-Gbps unified network fabric

Low-latency, lossless, 10-Gbps Ethernet and industry-standard Fibre Channel over Ethernet (FCoE) fabric
Wire-once deployment model in which changing I/O configurations no longer means installing adapters and recabling racks and switches
Fewer interface cards, cables, and upstream network ports to purchase, power, configure, and maintain

Virtualization optimization

Cisco VN-Link technology, I/O virtualization, and Intel Xeon 5600 series processor features, extending the network directly to virtual machines
Consistent and scalable operational model
Increased security and efficiency with reduced complexity

Unified management* (when integrated into the Cisco Unified Computing System)

Entire solution managed as a single entity with Cisco UCS Manager, improving operational efficiency and flexibility
Service profiles and templates that implement role- and policy-based management, enabling more effective use of skilled server, network, and storage administrators
Automated provisioning and increased business agility, allowing data center managers to provision applications in minutes rather than days

Redundant, hot-swappable power supplies

Increased availability

Redundant, hot-swappable, front-accessible fans

Increased serviceability, leading to less down time

Support for up to 5 PCI Express (PCIe) 2.0 slots

Flexibility, increased performance, and compatibility with industry standards
I/O performance and flexibility with 2 full-height, half-length x16 slots or 3 low-profile, half-length x8 slots
One of the 5 slots available to configure RAID support through optional LSI MegaRAID controller
PCIe 2.0 slots, which double bandwidth over the previous generation and offer more flexibility while maintaining compatibility with PCIe 1.1

Six-core Intel Xeon 5600 series processors

Intelligent performance that automatically adjusts processor performance to meet application demands, increasing performance when needed and achieving substantial energy savings when not
Automated energy efficiency that reduces energy costs by automatically putting the processor and memory in the lowest available power state while still delivering the performance required
Flexible virtualization technology that optimizes performance for virtualized environments, including processor support for migration and direct I/O
With more cores, threads, and cache in a similar power envelope, the Cisco Unified Computing System and Intel Xeon 5600 series processors together offer further reductions in TCO, increased business agility, and another big leap forward in data center virtualization
Cisco C-series servers keep pace with Intel Xeon processor innovation by offering the latest series 5600 processors with an increase in processor frequency and improved security features. With the increased clock speed, the Intel Xeon 5600 series based UCS C-Series rack mount servers will offer improved price/performance making UCS servers one of the best values in the industry.

Hot-swappable SAS, SATA or SSD drives

Up to 8 front-accessible, hot-swappable, small form-factor (SFF) SAS, SATA or SSD drives
Support for 7,200 and 10,000 RPM drives that deliver both value and capacity
Support for 15,000–RPM drives for utmost performance
Capability to tailor storage characteristics to application requirements through the choice of high capacity (500 GB and 1 TB) and economical SATA drives or high-performance, enterprise-class SAS (146, 300 and 600 GB) and SSD (100 GB) drives

RAID 0, 1, 5, 6, 10, 50, and 60 support

A choice of two RAID controller options to provide data performance and protection for up to 8SAS, SATA or SSD drives

Cisco UCS Integrated Management Controller

Web user interface for server management, administration, and virtual media
Virtual media support for remote keyboard, video, and mouse (KVM) and CD/DVD drives as if local
Intelligent Platform Management Interface (IPMI) 2.0 support for out-of-band management through third-party enterprise management systems
Command-line interface (CLI) for server management

Integrated 4 Gigabit Ethernet

Outstanding network I/O performance and increased network efficiency and flexibility
Increased network availability when configured in failover configurations

Optical drive

Direct front-panel access to CD and DVD media

Product Specifications

Table 2 lists the specifications for the Cisco UCS C250 M2 server.

Table 2. Product Specifications




1 or 2 Intel Xeon Series 5500 or 5600 processors
Choice of processors: Intel Xeon X5690, X5680, X5675, X5670, X5650, E5649, E5640, or E5620


Up to 48 DIMM slots
Support for DDR3-1333MHz registered DIMMs
Support for DDR3-1333MHz low-voltage DIMMs
Advanced ECC
Mirroring option

PCIe slots

5 PCIe 2.0 slots available
3 low-profile, half-length x8 slots
2 full-height, half-length x16 slots
x16 connectors on all slots

Hard drives

Up to 8 front-accessible, hot-swappable, 2.5-inch SAS, SATA or SSD drives

Hard disk options

146-GB SAS; 6G, 15,000 RPM
300-GB SAS; 6G, 10,000 RPM
500-GB SATA; 7200 RPM
600-GB SAS; 10,000 RPM
1-TB SATA; 7,200 RPM
100-GB SSD

Optical drive

24x CD±R/RW DVD±R/RW optical drive

Integrated graphics

Matrox G200 core embedded into the ServerEngines Pilot-2 BMC

Cisco UCS Integrated Management Controller

Integrated ServerEngines Pilot-2 BMC
IPMI 2.0 compliant for management and control
Two 10/100BASE-T out-of-band management interfaces
CLI and WebGUI management tool for automated, lights-out management

Baseboard management controller (BMC)

Integrated ServerEngines Pilot-2 BMC

Front-panel connector

Ease of access to front-panel video, 2 USB ports, and serial console

Front-panel locator LED

Indicator to help direct administrators to specific servers in large data center environments

Additional rear connectors

Additional interfaces include a DB-15 video port, 2 USB 2.0 ports, and a DB-9 serial port

Physical dimensions (H x W x D)

2RU: 3.39 x 17.5 x 28 in. (8.61 x 44.45 x 71.12 cm)

Temperature: Operating

50 to 95°F (10 to 35°C)

Temperature: Nonoperating

–40 to 149°F (–40 to 65°C)

Humidity: Operating

5 to 93% noncondensing

Humidity Nonoperating

5 to 93% noncondensing

Altitude: Operating

0 to 10,000 ft (0 to 3000m)

Altitude: Nonoperating

40,000 ft (12,000m)

Regulatory Standards

Table 3 lists regulatory standards compliance information.

Table 3. Regulatory Standards Compliance: Safety and EMC




UL 60950-1 No. 21CFR1040
CAN/CSA-C22.2 No. 60950-1
IRAM IEC60950-1
CB IEC60950-1
EN 60950-1
IEC 60950-1
GOST IEC60950-1
CCC*/CB GB4943-1995
CB IEC60950-1
AS/NZS 60950-1

EMC: Emissions

47CFR Part 15 (CFR 47) Class A
CISPR2 2 Class A
EN55022 Class A
ICES003 Class A
VCCI Class A
KN22 Class A
CNS13438 Class A

EMC: Immunity

KN 61000-4 Series

For a complete list of Product ID numbers (PIDS) please refer to the corresponding SpecSheet.

Cisco Unified Computing Services: Cisco C-Series Rack-Mount Servers

Using a unified view of data center resources, Cisco and our industry-leading partners deliver services that accelerate your transition to a Cisco UCS C-Series Rack-Mount Server solution. Cisco Unified Computing Services help you quickly deploy the servers, optimize ongoing operations to better meet your business needs, and migrate to Cisco’s unified computing architecture. For more information, visit

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