Friday, 18 March 2011

IP Storage Networking: Straight to the Core



IP Storage Networking: Straight to the Core
| 1969-12-31 00:00:00 | | 0 | Networks


`For those considering network storage consolidation, Straight to the Core walks the reader through both the how and why of IP and Ethernet's flexibility.` Larry Boucher, CEO Alacritech`A forward-looking work with excellent technical content. Orenstein knows his stuff,,.enough technical meat to satisfy the engineers and business overview of continuance strategies to satisfy CIOs/managers/planners.`Tom Clark, SNIA board member and author of IP SANsMaximizing the business value of enterprise storage technology Soon, you'll be managing 100x more data than you are today -- with even greater demands for availability and business continuity. IP Storage Networking: Straight to the Core gives you a complete blueprint for meeting that challenge. Enterprise storage expert Gary Orenstein delivers expert guidance for evaluating, architecting, and implementing IP-based storage technologies,,.and for maximizing the business value of storage across a range of your requirements. Orenstein covers all this, and more: * Enterprise storage networking: current options, future trends * New storage strategies: from disaster recovery to operational agility * A complete software infrastructure for managing enterprise storage * The evolution of distributed storage intelligence * Outsourcing storage and managing storage-related SLAs * IP-based SANs: iSCSI, topologies, security, and other key issues * Implementing policies that protect data and facilitate recovery * Measuring and maximizing ROI on enterprise storage investments Whether you're a technical or business professional, IP Storage Networking: Straight to the Core will help you develop storage action plans that leverage innovation to maximize value on every dime you invest. Addison-WesleyPearson EducationISBN: 0-321-15960-8

User review
A good mix of technical and business information
Gary Orenstein explains the world of storage and it does so from two perspectives: technical and business. He starts with the ins and outs of various storage technologies, and delves into why one should choose one over the other. He speaks to the technical folks that want to perhaps move their enterprise toward an IP storage technology, and he speaks to the buyers that need to convince their managers to plunge thousands of dollars on storage technology. Storage is becoming a multi-billion industry all into itself and it all has happened in over a decade. The vast amount of storage required in virtually any industry from finance to life sciences to the military, requires the storage industry to move at a rapid passé, and for the IT managers to keep up with a very fast moving industry.

It is not easy, however, to keep up without some help. Orenstein's IP Storage Networking does just that, which is to provide a detailed overview of the technology and the industry. After the overview and background on storage hardware and software, the author quickly goes into building effective storage network roadmaps. The reader quickly learns the differences between Direct Attached Storage (DAS), Network Attached Storage (NAS) and Storage Area Networks (SAN). The difference between file-based storage of NAS and block layer storage of SAN is discussed in detail, and the reader is made aware of the situations where one is preferred over the other. The author really pushing for IP based storage (SAN), where the core IP network infrastructure already in place can be used. The histories of these different technologies are also interesting. The intelligence of storage has moved from server platforms to disk subsystems and with IP storage, to within the network layer fabric. This allows the end systems to be rather dumb, and the already in place infrastructure to be utilized further. The problem arises when the current Fibre Channel protocol of NAS needs to be upgraded to an iSCSI or iFCP, which are IP-based protocols. Traditional NAS is more flexible because it is OS and file system type independent, but DAS is more optimized and faster because it is attached to the server. SAN fits into the sweet spot between the two, but a traditionally relies on a Fibre Channel protocol for communication. This is where the IP storage protocols come into play as they try to standardize on the communication backbone and infrastructure, and still be able to keep up with the demand. The good news is that Gigabit and 10Gig Ethernet are on the horizon, and are able to meet the needs of SAN storage. The issue then becomes migration paths and plans to IT managers, and the authors spends a great deal of time on that topic.


One of the key things that managers need to keep in mind is that their IP connectivity infrastructure goes hand in hand with their IP storage infrastructure in the future. The good advantage of this model is that administration and maintenance will be simpler goes forward, but the current state of the enterprise maybe far from that point. Fibre Channel protocols may already be in place, and ripping it out maybe costly. A phased approach is suggested throughout the book for such scenarios, and options such as gateways, routers, switches that can translate one to the other are explored in detail.

Let us not loose focus on why we are spending all this money on storage technology: we want to achieve business continuity. Well, there are six different patterns that the author explores in his book:

1. Simple backup of data

2. Disk redundancy where the data is stored more than once

3. Failover where there are at least two of everything

4. Point-in-time copy where check-pointing of data takes place as data changes

5. Wide-area replication where the entire data center can failover to another site upon a disaster

6. Wide-area replication and failover where the backup site can literally pickup where the primary left off.


As you can imagine, simply talking about business continuity is no longer enough. The 24/7 scenario takes an entire new meaning with each one of these architectural patterns, and the business mangers and IT architects need to balance the cost versus ROI at every step of way. As we move to the scenarios where Wide-area networking plays a role, the author shows a dramatic increase in cost and complexity. Now we have to calculate the Round Trip Time of data, and congestion on a connection between two sites, which we may have little or not control over.

I would recommend this book to any IT manager, architect and designer that need to come up to speed with the fast passé world of storage technology.



User review
Especially for IP-based storage professionals
Expertly written by IP storage expert Gary Orenstein especially for IP-based storage professionals in the business community, IP Storage Networking is an in-depth, comprehensive, superbly organized guide covering current options and future trends of enterprise storage; new storage strategies such as disaster recovery and operational agility; outsourcing storage and managing storage-related SLAs; maximizing ROI on enterprise storage investments, and more. Practical language, charts and diagrams, examples, recommendations, and more fill this useful, insightful, and confidently recommended instructional reference from cover to cover.

User review
Clear, thorough coverage
Excellent, well-rounded coverage of the future of IP-enabled storage networking. The book is filled with technical and financial insight that I found very helpful. Chapters 6, 7, and 8 were particularly useful with coverage for topics such as business continuity, outsourcing, SLAs, and deployment - all very relevant given today's business and political environment.

User review
New rules; be prepared
Gary Orenstein clearly articulates how the storage industry is experiencing profound change; existing standards are meshing with emerging technologies to provide new revolutionary capabilities. IP becomes the `core` of storage networking technologies. Gary shows how to take advantage of these changes, with offensive and defensive strategies.

Easy to understand with:
- Executive overview
- Terms and technology overview, with explanations


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