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Books > Computing & IT > General theory of computing
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High Availability IT Services (Paperback)
Loot Price: R1,734
Discovery Miles 17 340
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High Availability IT Services (Paperback)
Expected to ship within 12 - 17 working days
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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.
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