ibm bladecenter ht: leveraging the best of it and ... atm, gige, ss7, t1/e1 and j1–by leveraging...

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Gives the flexibility to choose from a family of servers that share a single, integrated, com- patible architecture Leverages open standards for ease of integration Offers telecom providers end- to-end application support from IBM Business Partners in the telecommunications industry The convergence of IT and telecommunications network technology With the rapid rise of Next Generation Networks (NGNs), the telecommuni- cations industry is experiencing a convergence of IT and telecom network technology. Older, propri- etary hardware is not always able to cost-effectively deliver the high performance or throughput required to support new services such as Voice over IP (VoIP), streaming video, gaming or blended services. Telecommunications and network equipment providers are finding a pressing need to update their net- work infrastructures in order to compete in this new marketplace, where network performance and reliability are essential. Market pres- sures also place a premium on the rapid deployment of new applica- tions, easy scalability and lower total cost of ownership. Accelerating NGN convergence The three planes of an NGN telecom- munications network architecture – service, control and transport – have different needs, driving many hard- ware manufacturers to develop highly customized, telecom-specific solu- tions to meet these requirements. IBM BladeCenter HT: Leveraging the best of IT and telecommunications for NGNs Advanced solutions for telecommunications Highlights Delivers functionality across the entire telecommunications infrastructure – services, control and transport planes Provides the performance, speed and throughput needed to support Next Generation Network services

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Page 1: IBM BladeCenter HT: Leveraging the best of IT and ... ATM, GiGE, SS7, T1/E1 and J1–by leveraging offerings from the ... open standards is the Nortel 10Gb Ethernet Switch by BNT

■ Gives the flexibility to choose

from a family of servers that

share a single, integrated, com-

patible architecture

■ Leverages open standards for

ease of integration

■ Offers telecom providers end-

to-end application support from

IBM Business Partners in the

telecommunications industry

The convergence of IT and

telecommunications network technology

With the rapid rise of Next Generation

Networks (NGNs), the telecommuni-

cations industry is experiencing

a convergence of IT and telecom

network technology. Older, propri-

etary hardware is not always able

to cost-effectively deliver the high

performance or throughput required

to support new services such as

Voice over IP (VoIP), streaming video,

gaming or blended services.

Telecommunications and network

equipment providers are finding a

pressing need to update their net-

work infrastructures in order to

compete in this new marketplace,

where network performance and

reliability are essential. Market pres-

sures also place a premium on the

rapid deployment of new applica-

tions, easy scalability and lower total

cost of ownership.

Accelerating NGN convergence

The three planes of an NGN telecom-

munications network architecture –

service, control and transport – have

different needs, driving many hard-

ware manufacturers to develop highly

customized, telecom-specific solu-

tions to meet these requirements.

IBM BladeCenter HT: Leveraging the best of IT and telecommunications for NGNs

Advanced solutions for telecommunications

Highlights

■ Delivers functionality across

the entire telecommunications

infrastructure – services,

control and transport planes

■ Provides the performance,

speed and throughput needed

to support Next Generation

Network services

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2

Few available solutions can span

all three planes, requiring telecom-

munications service providers to fre-

quently deploy mixed infrastructures

to handle their various telecommuni-

cations applications – with the integra-

tion and flexibility compromises that

these infrastructures entail.

Moreover, these specialized telecom-

munications solutions are typically

not well suited to data center needs;

requiring the deployment of separate

architectures to deal with different

telecom and business computing

requirements. Implementing multiple

platforms drives up costs and ham-

pers overall flexibility, both key con-

siderations for telecom providers.

IBM offers a single, integrated

platform with the high performance

and throughput needed to support

telecommunications network, central

office and data center needs. The

IBM BladeCenter® family leverages

open standards and commercial-

off-the-shelf (COTS) components to

deliver an easily integrated, afford-

able, flexible, highly scalable family

of servers, one that shares a common

architecture. It is a true convergence

platform that helps maximize flexibil-

ity while minimizing cost.

Telecom functions in the control

and transport planes require high

performance, bandwidth and

throughput. With the introduction of

the high-performance, high-speed

IBM BladeCenter HT– specifically

designed for telecommunications

networks – telecommunications

service providers can now deploy a

common, standardized, integrated

platform across all three layers of the

telecommunications infrastructure:

one family, one architecture, one set

of capabilities that addresses the

diverse needs of NGN telecommuni-

cations applications.

By harnessing the best of IT

and telecommunications in a stand-

ardized platform, the common

BladeCenter family architecture

allows telecoms to take advantage

of a wide variety of solutions created

by IBM Business Partners, which

span telecommunications applica-

tions for end-to-end support in both

hardware and software solutions.

The BladeCenter platform, by

being based on open standards

and COTS components, enables

more rapid adoption of new tech-

nologies as they become available.

This means telecoms are not

locked into a proprietary solution

and can gain investment protec-

tion while leveraging flexibility and

choice – resulting in an enhanced

ability to innovate.

IBM BladeCenter HT:

Telecommunications flagship

The IBM BladeCenter HT is the

cornerstone of the family’s telecom

capability. A telecommunications-

optimized version of the IBM

BladeCenter H, it delivers the

performance, speed and bandwidth

needed to deploy service plane

applications, while supporting

deeper network functions in the

control and transport planes.

The BladeCenter HT provides

increased network infrastructure

performance with high-performance

dual- and quad-core CPUs from

Intel,®Intel,®Intel, AMD and IBM, and an inte-

grated and unified architecture

designed to facilitate high-speed

4x10Gbps switching and expansive

I/O bandwidth. IBM BladeCenter HT’s

multi-terabit networking and through-

put capability, which is essential for

I/O-intensive NGN applications such

as IP Television (IPTV) and video-on-

demand (VoD), yields greater overall

performance – ultimately helping to

improve the overall user experience.

The BladeCenter HT also offers

robust interconnectivity through sup-

port of a wide variety of high-speed

networking protocols – OC1, OC3,

OC12, ATM, GiGE, SS7, T1/E1 and

J1 – by leveraging offerings from the

IBM Business Partner ecosystem.

“ BroadSoft has worked closely with IBM to optimize our solutions on the IBM BladeCenter family of products with great success. We’re excited about the release of BladeCenter HT and expect it will further accelerate the shift we’re seeing toward blade servers as our customers transition to IMS and Next Generation Networks.”

– Bob Weidenfeller, vice president of engineering, BroadSoft

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3

An example of a telecommunica-

tions industry leader leveraging

open standards is the Nortel 10Gb

Ethernet Switch by BNT. Using a fully

non-blocking architecture, coupled

with blade server technology such

as Intel Core Micro Architecture and

AMD integrated memory controller,

enables the IBM BladeCenter HT

to deliver high throughput and low

latency – virtually eliminating packet

loss, while increasing speed and

network reliability for applications like

media streaming.

Throughput is further enhanced by

HyperTransport I/O, a point-to-point

high-speed communication within the

core processor architecture deliver-

ing higher bandwidth for I/O-intensive

applications such as media streaming.

The BladeCenter family makes

efficient use of power resources to

help reduce operating and environ-

mental costs. The IBM Low Voltage

Intel HS21 and the new power-

efficient AMD LS21/41 processor-

based blades, specifically designed

for the needs of power-sensitive

telecom environments, can be used

in the BladeCenter HT.

The BladeCenter HT is ideal for NGN

telecommunications applications

requiring NEBS Level 3/ETSI1 charac-

teristics (see the sample configura-

tions table). With the BladeCenter

common family architecture, telecoms

and network equipment providers are

able to easily configure their infra-

structures according to the specific

requirements of each application.

This helps optimize IT and NGN net-

work investments, including system

management resources.

Transport plane performance

The transport plane is the network’s

pathway to the outside world, moving

data in the network. The responsive-

ness, speed and reliability of the

network are critical, and for this

reason transport plane applications

require very high throughput and

I/O performance.

Transport plane applications typically

include, but are not limited to:

• Signaling Gateways (SS7)

• Wireless Access Gateways

(narrow- and wideband, WIMAX)

• Broadband Network Services

• Legacy Network/PSTN interconnection

• LAN/WAN interconnection

• Media Gateways

The BladeCenter HT is specifically

designed to meet the stringent

I/O throughput demands of transport

plane applications, offering:

High-performance packet processing

A multi-terabit backplane and a

special-purpose 4x1 AdvancedMC

Carrier blade supporting two 1GbE

switches and a PCIe switch facilitate

high-speed switching and I/O, provid-

ing the performance required to sup-

port a multi-service infrastructure.

Very high I/O bandwidth

The BladeCenter HT architecture

greatly increases network perform-

ance by supporting a multi-terabit

backplane and 40Gbps throughput

per blade. Packaged in a dense

chassis accommodating up to

12 blades, this yields oustanding

I/O capacity and scalibility.

Accommodating a variety of high-speed

I/O interfaces

Adherence to open standards

provides support for multiple tele-

com protocols (e.g., OC1, OC3,

ATM, GiGE, SS7, T1/E1, J1), and

a high-density 12U chassis offers

multiple physical connections. This

gives telecoms greater flexibility

and choice for support of network

protocols and interfaces.

Low latency

The BladeCenter HT can utilize the

new Nortel 10Gb Ethernet switch by

BNT using a fully non-blocking archi-

tecture that helps reduce interrup-

tions, thus significantly reducing the

number of dropped packets.

The IBM BladeCenter HT is an

outstanding high-performance plat-

form for high-speed Next Generation

Networks. It offers the performance

and throughput required to support

applications across all three telecom-

munications infrastructure planes –

transport, control and services – while

leveraging the IBM BladeCenter

family’s shared architecture, enabling

businesses to deploy a standardized,

easy-to-manage, affordable platform

across the enterprise.

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4

In addition, the BladeCenter HT

supports HS21 Intel processor-based

blade servers featuring advanced

memory technology, as well as the

new LS21/41 AMD Opteron proces-

sor-based blade servers with a low-

latency memory subsystem. Low

latency helps enable faster data

transmission by reducing the time

between the request for and delivery

of the information stored in memory.

Combined with the low packet loss,

this provides enhanced reliability and

high-speed throughput with higher

levels of bandwidth for applications

such as video streaming.

Control plane performance

The “brain” of the telecommunica-

tions infrastructure, the control plane

serves as a centralized arbitrator

between the service and transport

planes, controlling basic processing,

switching and signaling across the

network. Working hand-in-hand

with transport plane applications,

control plane applications require

high-performance processing along

with I/O bandwidth similar to those

of the transport plane.

Control plane applications typically

include, but are not limited to:

• Softswitch

• Media Gateway Controller

Function (MGCF)

• Wireless Base Station

Controllers (BSC)

• Home Location Register/

Subscriber Server (HLR/HSS)

• Session Border Control (SBC)

• Session Initiation Protocol

(SIP) Server

The high performance and through-

put of the BladeCenter HT are well

suited to these applications with the

following features:

High-performance CPU

High-performance dual- and

quad-core processors from Intel,

AMD and IBM meet the needs of

the compute-intensive applications

that reside in the control plane.

Very high I/O bandwidth

Multi-terabit networking and blade

server throughput of 40Gbps deliver

high network performance.

High density for scalability and headroom

A 12U chassis, efficient cooling

and use of power, combined with

dual- and quad-core processors,

enables a large amount of computing

power to be deployed in a compact

area, reducing costs associated

with floor space. In addition, multiple

chassis can be interconnected using

high-speed switches to create a

powerful clustered system providing

additional scalability.

Large memory capacity and low-latency

memory subsystem

With a 32GB (Intel) or 64GB (AMD)

memory capacity, efficient memory

subsystems and Memory I/O option

(MIO), the BladeCenter HT offers

increased speed and responsive-

ness for control plane applications.

Efficient use of power resources

Highly efficient power supplies and

single plane, straight-through cooling

enable very high density along with

power-consumption savings. In addi-

tion, the BladeCenter HT supports

power-efficient CPUs, including the

new Intel Low Voltage HS21 and AMD

LS21/LS41 Opteron processor-based

blade servers.

Cost-effective, high-performance,

large-capacity storage

The NEBS3/ETSI compliant 2

IBM System StorageTM DS3000

portfolio (DS3200, DS3400, EXP3000)

with optional DC power is well

suited to support telecom applica-

tions in the control and service

planes, with SAS interface tech-

nology (DS3200), 4Gbps Fibre

Channel controller (DS3400) and

up to 14TB of external storage.

For larger needs, the IBM System

Storage DS4700 delivers extremely

high performance (up to 1550Mbps

throughput) and scalability, with

up to 56TB of external storage.

Services plane performance

The services plane is where the new

generation of value-added telecom-

munications services reside.. . these

are what subscribers pay to access.

Here, too, high performance is impor-

tant, to give subscribers a smooth,

responsive service experience.

Services plane applications typically

include, but are not limited to:

• Application servers for IP Multimedia

Subsystem (IMS), VoIP, IPTV, VoD

and Advanced Security

• Feature Servers

• Directory Services

• Multimedia Messaging/

Short Message Service (MMS/SMS)

• Gaming

• Web hosting and caching

• Parlay Gateway

• Intelligent Network/Advanced

Intelligent Network

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5

The same high-performance features

that make the BladeCenter HT an

ideal choice for transport and control

plane applications, also suit it for the

requirements of the services plane:

High-performance CPU

A selection of high-performance,

dual- and quad-core, low-power-

consumption processors is available,

allowing telecoms to configure the

BladeCenter HT to satisfy unique

telecom industry requirements.

Very high I/O bandwidth

As with the transport and control

planes, I/O is critical to main-

taining peak performance. The

BladeCenter HT supports multi-

terabit networking and delivers

this performance thanks to its high-

speed backplane architecture.

Large memory capacity and low-latency

memory subsystem

A variety of memory technologies

such as fully buffered memory

modules, dedicated memory

bandwidth for each CPU and

HyperTransport I/O – point-to-point

high-speed communication within

the core processor – deliver higher

bandwidth and lower latency,

which can improve the overall user

experience for applications such

as streaming video, music and

video downloads.

Efficient use of power resources

IBM BladeCenter Low Voltage

HS21 Intel-based blade servers

and new LS21/41 AMD Opteron

processor-based, power-efficient

blade servers, specifically designed

for power-sensitive telecom environ-

ments, deliver better performance

per watt than ever before, and reduce

environmental costs.

High-performance, large-capacity storage

As with control plane applications,

high-speed, highly scalable storage

is a critical part of services plane

applications. Less delay in accessing

data means that subscribers get the

quality of service and speed that they

have come to expect. IBM System

Storage delivers fast, reliable access

to large volumes of online data

with NEBS Level 3/ETSI compliant 2

storage platforms delivering cost-

effective performance, high through-

put and ease of growth.

The IBM DS3000 storage portfolio

is well suited to support telecom

services plane applications such

as IPTV, IMS/VoIP and Advanced

Security, with SAS storage and

4Gbps Fibre Channel connectivity,

and up to 14TB of external storage

(via the EXP3000 expansion unit).

The IBM System Storage DS4700

offers even more, delivering up

to 1550Mbps throughput and three

times the expandability of the

DS3000 portfolio.

The IBM advantage

The IBM BladeCenter HT gives

telecommunications providers and

network equipment providers the

ability to accelerate NGN conver-

gence by harnessing the best of

IT and telecommunications technol-

ogy, while supporting the entire

end-to-end transport, control and

services plane infrastructure. This

makes it an ideal choice as the

centerpiece of a telecommunication

provider’s IT strategy.

But more importantly, the IBM

BladeCenter family as a whole

delivers the benefits of IBM’s commit-

ment to open standards. By basing

its systems on open standards and

COTS components, capital and oper-

ating costs are reduced, while invest-

ments are protected and the ease of

integration with existing infrastruc-

tures is enhanced. The BladeCenter

family’s openness also means that

IBM Business Partners have devel-

oped a wide variety of application

and compatible hardware solutions

that are readily integrated into a

BladeCenter based telecommunica-

tions infrastructure.

IBM has a leadership position in

offering standardized, end-to-

end NGN solutions for telecommuni-

cations service providers and

network equipment providers.

These powerful solutions, based

on IBM’s vision, advanced industry

knowledge and collaboration with

a rich ecosystem of IBM Business

Partners, give telecommunications

service providers the tools and

flexibility they need to innovate – to

develop and deliver new, compel-

ling products and services that give

them a competitive edge.

“ The IBM BladeCenter platform is key to BridgePort Networks’ strategy of providing a highly scalable telecom carrier-grade solution. Its improved performance will allow our customers to deliver voice, messaging and content-driven fixed mobile convergence more cost-effectively.”

– Steve Blumenthal, chief technology officer, BridgePort Networks

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6

Sample BladeCenter family confi gurations for telecom applications

Control plane applications

Base Station Controller (BSC) Centralized server in cellular systems for controlling multiple Base Transceiver Stations (BTSs).

Performs radio channel allocations, controls the fl ow of calls, controls handovers between BTSs,

controls fault management of BTSs and provides operational usage data. Interfaces to the

Mobile Switching Center (MSC) for routing calls. Also includes transcoding functions, which are

sometimes performed by a standalone unit.

• BladeCenter T or BladeCenter HT

• Blade (HS21: two for high availability, two 73GB drives, RAID 1 confi guration)

• AMC carrier blade with:

– T1/E1 AMC card running SS7 (Adax)

– T1/E1 (optionally OC1 or OC3) running ATM

Softswitch Controls connections in IP backbone networks and between IP and circuit networks.

Switching is controlled with software, as opposed to hardware in the older PSTN circuit switches.

Provides subscriber services. Provides control to signaling gateway and may include media

gateway control functions.

• BladeCenter T or BladeCenter HT

• Blade (HS21: two for redundancy, 4GB memory, two 73GB drives)

• System Storage EXP3000 (optional)

• High-speed expansion daughter card (requires 10G switch in chassis)

Media Gateway Controller Function Provides the control function for the media gateways; receives signaling information and

controls routing.

• BladeCenter T or BladeCenter HT

• Blade (HS21: two for redundancy, 4GB memory, two 73GB drives)

• AMC carrier blade with SS7 card (optional)

Session Border Control Provides security, monitoring for billing and regulatory purposes, maintains privacy of user and

carries info, resolution of VoIP protocol problems due to NAT/PAT and fi rewalls.

• BladeCenter H or BladeCenter HT

• Blade (HS21: two for redundancy, 4GB memory)

HLR/HSS Main database of subscriber information for a wireless network (HLR) or an IMS network (HSS).

Contains information such as subscriber address, status and profi le. Functionally, HLR and HSS

are similar; however, the protocols used in accessing them and the type of networks in which they

exist are different.

• BladeCenter T or BladeCenter HT

• Blade (HS21: two for redundancy)

• PEU side card with SAS HBA

• System Storage EXP3000

• AMC carrier blade if also performing HLR function

– T1/E1/J SS7 AMC card (Adax)

SIP Server (or S-CSCF) Allows networks to implement routing and security policies, authenticate users, and manage

user locations. In the case of CSCF in an IMS network, it performs registration of users, routing

and translation, interrogation of the HSS for authorization and user profi les, and maintains

session timers.

• BladeCenter (HS21: two for redundancy)

Transport plane applications

Broadband Network Services Services provided through a medium capable of supporting two or more signals/channels of data

being transmitted simultaneously. Generally, this includes DSL, fi bre channel and ATM networks.

• AMC carrier blade with:

– T1/E1 AMC card

– OC1 AMC card

– OC3 AMC card

– AMC processor card

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7

Sample BladeCenter family confi gurations for telecom applications

Transport plane applications (continued)

Wireless Access Services that allow devices which transmit and receive information without the use of electrical

conductors to connect into a telecommunications network:

• BladeCenter HT

• HS-21

• AMC carrier blade

• OC3-STM1 AMC card

Signaling Gateway A network entity that translates signaling information from one medium to another, usually SS7 to IP.

• AMC carrier blade with:

– HDCII-AMC card SS7 E1/T1/J (Adax: two cards running Sigtran protocols)

Media Gateway Network unit that translates the data between unlike networks, e.g., instance conversion of TDM

to VoIP (RTP) format:

• AMC carrier blade with:

– T1/E1 AMC card (optionally OC1, OC3 or OC12)

– AMC processor card

Legacy PSTN Interconnection Services providing TDM and SS7 connectivity to the PSTN for the purpose of enabling legacy

phones and faxes with voice-enabled broadband networks.

• BladeCenter HT

• AMC carrier blade

• HDCII T1/E1/J1 AMC card

• iSpan 3639 T1/E1/J1 AMC card

Services plane applications

IPTV VoD Server (or media server) Server that stores and transmits videos that can be individually selected by a user for

display on a video monitor.

• BladeCenter H

• LS21: 32GB memory

• High-speed expansion daughter card

• PEU side card with two SAS HBAs

• 10G switch in chassis

• System Storage EXP3000

SMS Server that stores text messages sent by a user and delivers them to the recipient when

they are available.

• BladeCenter HT

• Blade (HS21: two for redundancy, two 73GB drives)

• AMC carrier blade

• T1/E1/J SS7 AMC card (Adax) for legacy support

IPTV Application Server EPG Server providing an on-screen television program guide to television programs to multiple users,

which allows them to view, select and discover content through multiple options such as time,

channel, or title via their remote control or keyboard.

• BladeCenter H

• Blade (HS21: 4GB memory, 73GB drive)

Security (Firewall) Server that allows or blocks traffi c to provide secure access using various techniques such

as Network Address Translation (NAT), packet fi ltering and stateful inspection.

• BladeCenter H or BladeCenter HT

• Blade (HS21: quad core, 4GB memory, two 73GB drives, RAID 1 confi guration)

• High-speed expansion daughter card (would require 10G switch in chassis)

IMS (VOIP Server) Application server in an IMS network, typically serving as either an SIP Proxy or VoIP PBX.

• BladeCenter H or BladeCenter HT

• Blade (HS21: two for redundancy, 8GB memory, two 73GB drives)

Page 8: IBM BladeCenter HT: Leveraging the best of IT and ... ATM, GiGE, SS7, T1/E1 and J1–by leveraging offerings from the ... open standards is the Nortel 10Gb Ethernet Switch by BNT

For more information

Learn how IBM can help your

company capitalize on revenue

opportunities and reduce

costs, while helping you retain

profitable customers.

You can also find out how you can

take advantage of IBM’s extensive

industry expertise by contacting the

IBM Telecommunications team, or

visiting us on the Web at:

ibm.com/telecom/systems

© Copyright IBM Corporation 2007

IBM Systems and Technology GroupRoute 100Somers, NY 10589

Produced in the United States of America2-07All Rights Reserved

IBM, the IBM logo, ibm.com, BladeCenter, ClusterProven, ServerProven and System Storage are trademarks or registered trademarks of International Business Machines Corporation in the United States, other countries, or both.

Intel is a registered trademark of Intel Corporation in the United States and other countries.

Other company, product or service names may be trademarks or service marks of others.

References in this publication to IBM products or services do not imply that IBM intends to make them available in all countries in which IBM operates.

This publication was produced in the United States. IBM may not offer the products, services or features discussed in this document in other countries, and the information may be subject to change without notice. Consult your local IBM business contact for information on the product or services available in your area.

1 Certified testing by Underwriters Laboratories of the BladeCenter HT chassis is in progress. When complete the BladeCenter HT chassis will be covered under a UL certified NEBS Level 3/ETSI test report, which will be available for review with customers.

2 Certified testing by Underwriters Laboratories of the DS3000 storage platform is in progress, and when complete the DS3000 storage portfolio will be covered under a UL certified NEBS Level 3/ETSI test report, which will be available for review with customers.

Performance is an Internal Throughput Rate (ITR) ratio based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual throughput that any user will experience will vary depending upon consid-erations such as the amount of multiprogramming in the user’s job stream, the I/O configuration, the storage configuration, and the workload proc-essed. Therefore, no assurance can be given that an individual user will achieve throughput improvements equivalent to the performance ratios stated here.

Some machines are designed with a power management capability to provide customers with the maximum uptime possible for their systems. In extended thermal conditions, rather than shut down completely, or fail, these machines auto-matically reduce the frequency of the processor to maintain acceptable thermal levels.

IBM hardware products are manufactured from new parts, or new and serviceable used parts. Regardless, our warranty terms apply. For a copy of applicable product warranties, write to: Warranty Information, P.O. Box 12195, RTP, NC 27709, Attn: Dept. JDJA/B203.

IBM makes no representations or warranties regarding third-party products or services, including those designated as IBM ServerProven,®including those designated as IBM ServerProven,®including those designated as IBM ServerProven,IBM ClusterProven,®IBM ClusterProven,®IBM ClusterProven, or BladeCenter Interoperability Program products. Support for these third-party (non-IBM) products is provided by non-IBM manufacturers.

All customer examples cited or described in this document are presented as illustrations of the manner in which some customers have used IBM products and the results they may have achieved. Actual environmental costs and performance characteristics will vary depending on individual customer configurations and conditions.

All statements regarding IBM’s future direction and intent are subject to change or withdrawal without notice, and represent goals and objec-tives only.

Information about non-IBM products is obtained from the manufacturers of those products or their published announcements. IBM has not tested those products and cannot confirm the perform-ance, compatibility, or any other claims related to non-IBM products. Questions on the capabilities of non-IBM products should be addressed to the suppliers of those products.

The information could include technical inac-curacies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. IBM may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time without notice.

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