Server Operating Systems

Server Operating Systems

Nijaz Bajgoric (University of Sarajevo, Bosnia)
DOI: 10.4018/978-1-60566-160-5.ch006
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Abstract

Server configurations described in Chapter V are operated by server operating systems. Server-based application software and business-critical applications are installed on these platforms. Taken together, they form what is called “server operating environment,” the hardware-operating system platform responsible for running business applications and keeping “business in business.” Chapter VI explains in more details server operating systems and their role in ensuring continuous computing and hence business continuity.
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The Basics Of Server Operating Systems

Server operating systems are described according to several attributes. One of the most widely used approaches is the one that makes classification according to the processor that is used by a server configuration.

Servers are operated by server operating systems. By definition, an operating system is a collection of programs that manage the computer’s activities. The main function of the operating system is to control the computer system’s operations including monitoring activities and the assignment of system tasks. The operating system supervises the overall operation of a computer, including such tasks as monitoring the computer’s status, handling executable program interruptions, and scheduling of operations, and controlling of input and output processes. Operating system provides not only an interface between the user and the hardware itself but also an operating platform on top of which other programs—application software, can run.

Every operating system should include the basic functions such as: process management, memory management, file management, secondary storage management, I/O management, network management, security and protection management, user management, and so forth.

Computers with single processor never really do more than one job at a time, but since they are fast enough in processing data, from user’s perspective it looks like doing many things at once. Multitasking is basically the ability to run multiple programs or tasks “at the same time.”

As almost all contemporary operating systems support multitasking capabilities, but not all of them are multi-user operating systems, we will adopt the approach, which divides all operating systems into two main groups:

  • desktop operating systems (supporting multitasking, but not multi-user features, they are single user operating systems), and

  • server operating systems (supporting both multitasking and multi-user capabilities).

Actually, having in mind portable and mobile computing devices, we can say that today’s computers use three types of operating systems:

  • a)

    desktop operating systems (DOS)

  • b)

    server operating systems (SOS)

  • c)

    mobile operating systems (MOS).

Desktop OSs are single-user and multi-tasking operating systems, while server OSs are multi-user and multi-tasking operating systems. Unlike server OS that are aimed at running mission-critical applications, desktop OSs run on desktop platforms and provide both local processing capabilities and client access to server systems. Mobile computing devices run mobile (portable) operating systems and have similar features as desktop operating systems.

Server operating systems can be classified in different ways. One of the most widely used approaches is the one that makes classification according to the processor that server configuration is based on. We are going to respect this approach as well. While most people consider Windows Server, UNIX and Linux as being current mainstream server operating systems, most widely used server operating systems today are:

Complete Chapter List

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Dedication
Nijaz Bajgoric
Table of Contents
Foreword
Angappa Gunasekaran
Preface
Nijaz Bajgoric
Acknowledgment
Nijaz Bajgoric
Chapter 1
Nijaz Bajgoric
The first chapter aims at defining a “big picture” of contemporary business and business computing. Business pressures and business risks are... Sample PDF
Business Computing in the Internet Era
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Chapter 2
Economics of Downtime  (pages 23-39)
Nijaz Bajgoric
After introducing some basic facts on how today’s businesses are faced with several types of business risks, the second chapter tends to explain one... Sample PDF
Economics of Downtime
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Chapter 3
Nijaz Bajgoric
The previous chapter introduced the two major concepts of continuous computing: downtime and uptime. Chapter three goes a step further and aims at... Sample PDF
Business Continuity and Business Continuity Drivers
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Chapter 4
Nijaz Bajgoric
Based on the framework defined in Chapter III, the fourth chapter discusses the models of information architectures that are used in implementing... Sample PDF
Information Architectures for Business Continuity
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Chapter 5
Nijaz Bajgoric
After identifying major downtime points within a client-server architecture in Chapter IV, Chapter V discusses in more details enterprise servers... Sample PDF
Server Operating Environment and Business Continuity Drivers
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Chapter 6
Server Operating Systems  (pages 103-131)
Nijaz Bajgoric
Server configurations described in Chapter V are operated by server operating systems. Server-based application software and business-critical... Sample PDF
Server Operating Systems
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Chapter 7
Nijaz Bajgoric
Server operating systems described in Chapter VI usually come preinstalled. Additional components can be installed “on-demand” in the form of... Sample PDF
Advanced Server Technologies for Business Continuity
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Chapter 8
Nijaz Bajgoric
Chapter VIII discusses the server operating systems’ main attributes from the selection perspective. Several selection criteria are explained... Sample PDF
Choosing the Server Operating Platform for Business Continuity
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Chapter 9
Nijaz Bajgoric
Chapter IX focuses on the role of system administration as an IT-profession and system administrator as a person who does the administrative... Sample PDF
System Administration and System Administrator's Role in Business Continuity
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Chapter 10
Nijaz Bajgoric
Chapters V-IX dealt with server operating environment and its role in ensuring business continuity mostly in cases of ongoing data processing... Sample PDF
Backup and Recovery Technologies for Business Continuity
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Chapter 11
Nijaz Bajgoric
In addition to standard storage and traditional tape-based backup technologies explained in Chapter X, businesses employ advanced storage... Sample PDF
Advanced Storage Technologies for Business Continuity
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Chapter 12
Nijaz Bajgoric
Continuous computing technologies explored in previous chapters, in many cases, are located on different locations. However, they depend on each... Sample PDF
Networking Technologies for Business Continuity
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Chapter 13
Nijaz Bajgoric
After explaining several continuous computing technologies in previous chapters, the book focuses on business continuity management in Chapter XIII.... Sample PDF
Business Continuity Management
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Chapter 14
Nijaz Bajgoric
Continuous computing technologies are employed in order to achieve business continuity from the business operations perspective. In the same time... Sample PDF
Business Continuity for Business Agility
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