Server Hardware Chapter 22 Release 22/10/2010Jetking Infotrain Ltd

Jetking Infotrain Ltd.

Server Hardware

Chapter 22

Release 22/10/2010

Slide 2 of 25Chapter 2


Objectives

Explain the difference between a server and PC

Identify the components of a server

Explain the different types of server

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Server

To provide high availability and redundancy, hardware used in servers are different as compared to a normal desktop.

Server is a device with a set of hardware and software, provides various services to other machines or computers on the network to do some certain tasks.

Servers are dedicated, high-reliability computers that are generally used to support multi-user business applications

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Question for GD Time Limit – 4 Mins

What is a hardware based server?

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Difference between Server and PC - I

Server PC

Uses Xeon or Itanium processor in multiple numbers

Uses single desktop processor

Multiple Hard disks are used Single hard disk is used

Higher memory capacity and in multiple numbers e.g. 2 or 4 or 8

Lower memory capacity and less in number e.g. 1 or 2.

Network capability is better Normal network capability

Serves more number of users e.g. 100 or 500 or 1000

Are built for individual user

Structure is more advanced and complex

Simple structure

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Difference between Server and PC - IIRequires redundant system to cope with failure.

Doesn’t have redundant system.

Can run 24*7 Operate for normal hours e.g. 8 hours per day

Supports hardware RAID Doesn’t support RAID

More number of expansion slots Less number of expansion slots

More number of cooling fans e.g. 4 or 8

Less number of cooling fans e.g. 1 or 2

Huge size and weight Less size and weight

Can be tower or rack or blade model

Only tower model

More number of SMPSs e.g. 2 or 3 which are hot swappable

Single normal SMPS is used

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Difference between Server and PC - III

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Hot swappable hard drives are used Normal hard drive is used Cannot be assembled Can be assembled Difficult troubleshooting Easy troubleshooting Requires more power and cooling Requires less power and cooling More noisy because of multiple fans Less noisy Less down time and higher availability and fault tolerance

More down time and no fault tolerance

Manufactures are IBM, HP, Sun and Dell Manufactures are HCL, Wipro, Lenovo, and Compaq

Cost starting from Rs. 40000 Cost starting from Rs. 20000




What is the difference between a server and a PC?

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Types of Server

Entry Level

Mid Range

High End

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Entry Level Server

Mainly used for running server applications such as file sharing, print sharing, Web serving, low volume email and business automation applications.

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Example of an entry level server?

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Mid Range Server

A medium sized server which consists of a platform hardware and operating system together to support the operating environment for applications. Mid range server comes with a built in database to serve a smaller group of users.

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High End Server

Provides a web hosting environment with high server availability such as high performance, reliability and high speed. Designed to achieve supercomputer level of performance.

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What are the different types of servers?

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Sl. Types of Servers



Components of a Server - I

RAID Controller - A disk controller card that supports one or more RAID configurations.

RAID controller can either embedded in the motherboard or come in the form of PCI expansion cards.

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Components of a Server - II

SAS/SCSI Hot Swappable HD - SAS/SCSI hot swappable drives allow users to remove the faulty hard disk and insert a new disk without doing power off the server.

Most of the modern server has the ability to use hot swappable hard disks along with disk array.

SAS/SCSI hot swappable HDs are usually located in a caddy or tray inside the server

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Components of a Server - III

Backplane - Circuit board which connects several connectors in parallel to each other. Each pin of the connector connects with corresponding pin of all other connectors and forms a computer bus.

Server commonly has backplane to attach hot swappable hard drives.

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Components of a Server - IV

SCSI Cable - SCSI cables are used to connect and transfer data between computer and peripheral devices such hard disks. SCSI cable length range from 6 meters to 25 meters.

ECC RAM - Used for detecting and correcting error during storage and transmission of data in server. There are certain kinds of RAM which use this technique to correct the data errors.

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Components of a Server - V

Fan - Used to remove the heat produced inside the server. Server fans are located inside a bay. Commonly server contains 3, 4, 6 or 8 fans to cool the system.

Hot Swappable SMPS - Two or more SMPS are attached to a single machine. If any one of the SMPS is not working, other one takes the control.

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Group Activity Time Limit – 5 Mins

Draw a window pane on different components of a Server.

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Practical Activity Time Limit – 49 Mins

Show these components to the students and get the activity 1 mentioned in this chapter done from the students.

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Summary – I Server is a device with a set of hardware and software, which

provides various services to other machines or computers on the network.

Main features, which differentiate a server from other computer system are performance, scalability, availability, reliability and redundancy.

Major components of server are RAID controller, ECC memory, Backplane, Fans, SCSI Hot swappable HDD, SCSI cables and Hot swappable SMPS.

RAID controller is a disk controller card that supports one or more RAID configurations.

SAS/SCSI hot swappable drives allows the user to remove the faulty hard disk and insert a new disk without doing power off the server.

Server commonly has backplane to attach hot swappable hard drives. Release 22/10/2010 Jetking Infotrain Ltd.



Summary – II

SCSI cables are used to connect and transfer data between computer and peripheral devices such hard disks.

ECC RAM is used for detecting and correcting error during storage and transmission of data in server.

Entry level servers are used to run several server applications such as file sharing, print sharing, Web serving, low volume email and business automation applications.

Mid range server is used for more intensive database storage and retrieval functions.

High end server provides a web hosting environment with high server availability.Release

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Explorative Work

Refer to Internet, reference books or magazine to get the information.

Do not copy the information provided in this text book.

Consult your faculty for further guidance.

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Server Make Specification Type Warranty RAID Support Approx. Cost


Mind Map

Draw a mind map to summarize this chapter

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Documents

Server Hardware Chapter 22 Release 22/10/2010Jetking Infotrain Ltd