Administering Data Centers: Servers, Storage, and Voice over IP Review

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Administering Data Centers: Servers, Storage, and Voice over IP Reviewhappen to read this book at one of my friend's place. I couldn't resist to buy it immediately. I have been working as System Administrator for last 8 years, but found all aspect required for Data Center operations from scratch. Various topics covered, like power requirement or Air conditioning to Server performance, networking with storage technologies in impressive manner with excellent style of subject presentation.

This book is an asset for Data center managers or Systems Administrators also can be used from Academic point of view by Computer informations systems students.

Anitha Lingala
Administering Data Centers: Servers, Storage, and Voice over IP Overview"This book covers a wide spectrum of topics relevant to implementing and managing a modern data center. The chapters are comprehensive and the flow of concepts is easy to understand."-Cisco reviewerGain a practical knowledge of data center conceptsTo create a well-designed data center (including storage and network architecture, VoIP implementation, and server consolidation) you must understand a variety of key concepts and technologies. This book explains those factors in a way that smoothes the path to implementation and management. Whether you need an introduction to the technologies, a refresher course for IT managers and data center personnel, or an additional resource for advanced study, you'll find these guidelines and solutions provide a solid foundation for building reliable designs and secure data center policies.* Understand the common causes and high costs of service outages* Learn how to measure high availability and achieve maximum levels* Design a data center using optimum physical, environmental, and technological elements* Explore a modular design for cabling, Points of Distribution, and WAN connections from ISPs* See what must be considered when consolidating data center resources* Expand your knowledge of best practices and security* Create a data center environment that is user- and manager-friendly* Learn how high availability, clustering, and disaster recovery solutions can be deployed to protect critical information* Find out how to use a single network infrastructure for IP data, voice, and storage

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Blade Servers and Virtualization: Transforming Enterprise Computing While Cutting Costs Review

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Blade Servers and Virtualization: Transforming Enterprise Computing While Cutting Costs ReviewIt doesn't take very long to figure out that the authors really like blade servers.
They like their space savings, cable plant simplicity, and uniformity. There are very detailed (although never critical) descriptions of each manufacturer's product lines and some very exhaustive matrices comparing not only blade servers but virtualization products as well.
My problems are in the details. First of all, it is clear that in many cases the benefits being credited to blade servers accrue ONLY because those blade servers are running virtualization products. Moreover, in many cases it is unclear why the benefits would not have accrued to commodity scale out servers running virtualization products.
Two, there are some claims that just stretch credulity too far. For instance, it is claimed that a provisioning a new blade server can be done in a few hours while doing the same with a rack mount server can take weeks.
Bearing in mind that Google, Yahoo, and Microsoft have all constructed their massive data centers with rack mount servers, you have to wonder how they could have made the same mistake (from the author's point of view) several hundred thousand times for each vendor.
The fact of the matter is that blades are a perfect choice for certain data center environments, but not others. Today they constitute ~ 15 % of all server shipments and most vendors hope to get that up to ~20% by 2010.
What's the hold up? Well, blade servers cost more per unit of computing power. Their form factors are proprietary, so their is considerable vendor lock-in (and thus higher prices). And the switches built for each blade center are vastly more expensive and slower to adopt new features than standalone modular or fixed form factor switches.
Conversely, virtualization is a wonderful add-on for certain types of compute applications, but not all. (For the technically inclined, if compute latency is at a premium, or the computations requires large amounts of state to be held in memory, then virtualization is going to be at best a mixed blessing and quite possibly make things worse.) Such limitations are alluded to peripherally, but never spoken to head on.
That's a darn shame. Had the authors included a chapter on when blades make sense and when virtualization makes sense, this would have easily been a 5 star book for me. The writing style is lucid and flows well. The authors are clearly experienced in their field. However, the assertion that blades and virtualization are a broad based panacea for most types of organizations and data centers just does not conform to the facts.Blade Servers and Virtualization: Transforming Enterprise Computing While Cutting Costs Overview
Blade server systems and virtualization are key building blocks for Next Generation Enterprise Data centers
Blades offer modular, pre-wired, ultra high-density servers (up to 10x traditional servers) with shared components (power, cooling, switches) – reducing complexity and cost, and improving flexibility, availability, manageability, and maintainability
Virtualization enables consolidation of physical servers by allowing many virtual servers to run concurrently on one physical server – improving system utilization, reducing the total number of physical servers, reducing costs, and increasing flexibility
This is the first book covering these complementary technologies and how, together, they provide a strong foundation for the future
It examines the history, architectures, features, examples, and user case studies of blade systems and virtualization, and offers guidance and considerations for how to evaluate and implement solutions


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