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INTRODUCTION
A blade server is a stripped down server computer
with a modular design optimized to minimize the
use of physical space and energy.
 Blade servers is a card on the server: a single
motherboard that contains a complete computer
system, including processors, memory, network
connections and related electronic devices

IBM HS20 blade server
8U Rack mount Blade Sever Chassis
Reduced Cable Sprawl
HP ProLiant DL385
BLADE SERVER

Blade servers allow more processing power in
less rack space, simplifying cabling and reducing
power consumption.

Blade servers can experience as much as an 85%
reduction in cabling for blade installations over
conventional 1U or tower servers. With so much
less cabling, IT administrators can spend less time
managing the infrastructure and more time
ensuring high availability.

Blade typically comes with one or two local
ATA or SCSI drives. For additional storage,
blade servers can connect to a storage pool
facilitated by a network-attached storage
(NAS), Fiber Channel, or iSCSI storage-area
network (SAN).

The individual blades in the chassis (also
called a cabinet) are connected using a bus
system . Combined they form a blade server
and all share a common network connection,
power supply and cooling resources.

Each blade will have its own software and
operating system installed on it. Blades such
as storage blades with hard disk drives or
those supporting Gigabit Ethernet switches
and Fiber Channel storage switches can be
added to a blade server.

A blade server also works well with thin
client devices (a client/server architecture in
which no data is stored).
HISTORY
Blade server technology was initially
developed in the early millennium through a
partnership between IBM and Intel.
 Later, a number of major companies, led by
IBM, formed an “industry community” in
February 2006, with a website base at
blade.org.
 The mission of the community is to “accelerate
the growth and adoption of [blade]
technologies in the market.”

HARDWARE CONFIGERATION
The hardware of blade server contains the
following elements
• Chassis (exterior): The components of
blade servers are placed in a chassis. The
chassis can hold a number of server blades.
Components in chassis
 Server blade
 Switch blade
• Management blade: The management
blade is to manage the blades in the chassis.
 CPU: Central processing unit
 NIC: Network interface card
•
Middle plane: Middle plane is for
connecting the switch blades.
 NIC Hard disk
 Memory
 CPU
FEATURES
Lower hardware costs :
• Sharing of power and cooling equipment.
• Management of hardware and cabling
systems

 Simplified
•
•
•
deployment and
maintenance :
Time-consuming and resource-intensive
process
Sharing a number of redundant power
supply, so to minimize the wiring of the
rack
Administrators can operate through a
network

•
•
To reduce power consumption :
Uses low-power processor.
Low power consumption because fewer
components.

•
To maximize the use of data center space:
Blade servers can make the server than the
current density of rack-optimized 1U system
increased 100% to 800%.
USES
Blade servers function well for specific
purposes such as
File sharing
 Web page serving and caching
 SSL encrypting of Web communication
 The trans-coding of Web page content for
smaller displays
 Streaming audio and video content

ADVANTAGES AND DISADVANTAGES
ADVANTAGES
 Condensed, high-density
 Load balancing and failover
 Power consumption & power management
 Lower management cost
 Flexibility, modularity, and ease of
upgrading
 Deployment and scalability
 Disaster management
DISADVANTAGES
Expensive configuration
 Expensive tool
 Vendor-lock
 Business case
 Heating and cooling

BLADE VS. RACKMOUNT
Blade Servers
Rack mount Servers
Shared infrastructure for fans, power
supplies, Ethernet switching, storage.
Networking and storage is built into the
chassis, which eliminates cables.
Each has its own power supply, fan and
cables.
Small form factor can use up to half the
space of a rack mount server.
Large physical floor space required to
house rack mount.
Installation requires no special tools or
expertise, semi-technical or non-technical
staff can deploy the blades. Able to hotswap.
More difficult deployment. SMB may
require on-site technicians to make
additions to the rack mount.
Proprietary nature limits the ability to mix
and match components from multiple
suppliers in one chassis.
More choice in system suppliers for
acquisitions. Multiple components from
different suppliers can be used in one
chassis.
Many blades still have cooling issues due
to shared cooling on the chassis
A variety of rack mount coolers are
available. Separate fans help cooling
issues.
VIRTUALIZATION

Virtualization involves emulating multiple
servers on one hardware platform.

Running multiple operating systems on a
single computer or storage virtualization
where you have the amalgamation of
multiple network storage devices into what
appears to be a single storage unit are
examples of virtualization

With a blade server you have the option to
combine blades with virtualization software
to consolidate workloads, each running on
its own instance of the OS (using the same
or a different OS).
Common Blade Server Computing
Environments

Blades are frequently deployed in data centers
and high-performance computing
environments, and can serve as application
servers, databases, e-mail or Web servers, and
more.

Large data centers and telecommunications
service providers benefit from the use of
blades as they provide the means for a large
business to respond quickly to changes in
business conditions.

Where a business or group would use
several different servers for different
applications, it makes sense to combine the
multiple servers into one blade server to
make for better manageability.
CURRENT RESEARCH

•
To Enables High-Performance Functionality:
blades are incorporating technology such as
open standard architectures, multicore
processors, PCI expansion for multiple I/O
functionality, the ability to house multiple OSs,
low-power processors and innovative cooling
techniques, standard AC electrical connectivity,
daisy-chaining and Gigabit Ethernet ports.
 HPC
•
Blade Implementations:
Distributed computing,
rendering/imaging, number-crunching
processes, test and measurement data
analysis, content manipulation, server
appliances or gateways, and
heterogeneous computing using mixed
OSs are just a few of the areas expected
to utilize blades for HPC
 Industry Adoption:
•
•
blade servers are well suited to seismic
data analysis, data manipulation, visual
rendering via FireWire interfaces and data
storage.
Military applications are beginning to
utilize blades as well, such as signal
detection and analysis, surveillance, data
analysis and manipulation, and visual
rendering of data.
 The
•
Emergence of Fully Capable Blade
Servers:
High-performance, open standard
computing is becoming more
commonplace across an increasing
number of technology-rich industries.
FUTURE SCOPE

At the component level, there are
improvements going on at the chip-level
from Intel and AMD like quad-core and
beyond.

Virtualization assist is now happening at the
hardware level, which is making the next
level up the server virtualization software
run substantially faster.

Continuing improvements in the power and
cooling efficiencies and capabilities.

The newer generations of blades systems
have improving substantially, to the point
where a blade server generates less heat and
is more efficient.
CONCLUSION

Blade servers can greatly improve the
reliability of business systems.

It is clear that by close review of the
application and it’s power requirements
decisions can be made that will allow for
future expansion, denser cabinets, greatly
reduced costs .power redundancy and will
optimize cable and CDU requirements.

It is only through making the power
requirements a priority at the beginning of
the project rather than an
after thought that these goals are achieved.
REFERENCES
www.wikipedia.com
www.ubiq.com
www.ubiqcomputing.org
www.teco.edu
www.personalubicom.com
www.cdtltd.co.uk/
www-3.ibm.com/
www.media.mit.edu/pia/Research/AnchoredDisplays/
www.media.mit.edu/~r/academics/PhD/Generals/Haw
ley.html
 IEEE Computer magazine, Sep-2006
 IGI.Publishing.Advances.in.Ubiquitous.Computing.F
uture.Paradigms.and.Directions.Mar.2006
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