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High Availability IT Services, by Terry Critchley
Download PDF High Availability IT Services, by Terry Critchley
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This book starts with the basic premise that a service is comprised of the 3Ps―products, processes, and people. Moreover, these entities and their sub-entities interlink to support the services that end users require to run and support a business. This widens the scope of any availability design far beyond hardware and software. It also increases the potential for service failure for reasons beyond just hardware and software; the concept of logical outages.
High Availability IT Services details the considerations for designing and running highly available "services" and not just the systems infrastructure that supports those services. Providing an overview of virtualization and cloud computing, it supplies a detailed look at availability, redundancy, fault tolerance, and security. It also stresses the importance of human factors.
The book starts off by providing an availability primer and detailing the reasons why you need to be concerned with high availability. Next, it outlines the theory of reliability and availability and the elements of actual practices in this high availability (HA) area, including Service Level Agreements (SLAs) and Change Management.
Examining what the major hardware and software vendors have to offer in the HA world, the book considers the ubiquitous world of clouds and virtualization as well as the availability considerations they present.
The book examines high availability concepts and architectures such as reliability, availability, and serviceability (RAS); clusters; grids; and redundant arrays of independent disks (RAID) storage. It also covers the role of security in providing high availability, cluster offerings, emergent Linux clusters, online transaction processing (OLTP), and relational databases.
- Sales Rank: #1438793 in Books
- Published on: 2014-12-17
- Original language: English
- Number of items: 1
- Dimensions: 10.10" h x 1.30" w x 7.10" l, 2.55 pounds
- Binding: Hardcover
- 537 pages
Most helpful customer reviews
1 of 1 people found the following review helpful.
The Best Book on how to build a world-class computing environment
By Harris Kern
I’ve been an IT Executive for the past 40+ years. My focus has always been on People, Processes and Technology and in that order. When discussing High Availability most IT professionals gravitate towards the technology for solutions as their primary focus, which is understandable, after all Technology makes the headlines. However, if the people and processes are not involved in the equation high availability will nothing but a pipe dream, which will never attained.
High Availability IT Services covers the entire spectrum of people, services, processes, security and tools required to build a ‘world-class’ computing environment. It is the most thorough book on high availability I’ve ever had the pleasure of reading and I’ve read many.
0 of 0 people found the following review helpful.
Highly recommended!
By E. Hens
Both very detailed and broad approach to the subject. Not limited to the more traditional infrastructure based look at high availability, but also focusing on software, processes and what the author calls 'liveware' (the human factor in impacting high availability), all together meaning the end user perspective: the IT service as experienced by the user.
The numerous references throughout the book to other resources, as well as real life examples, give additional value.
Not always an easy read in the theoretical parts, but the author adds a healthy amount of humor and regularly repeats some of the content to make it stick better into memory.
If you want to find out why the strenght of a chain is actually weaker than its weakest part, read this book.
If you are looking for actual infrastructure solutions, then this book is not for you.
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