DATA STORAGE MANAGEMENT
SAN road map: How to scale beyond a single fabric
Greg Schulz
02.10.2005
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What you will learn from this tip: How to determine whether you need to scale your SAN beyond a single fabric or device, and which technology to use for the job.
With the advent of 128-, 140- and 256- port count Fibre Channel switches and switching directors, previously complex fabric topologies have been simplified. Even so, there is the need in some environments to scale beyond the limits of a single device or fabric.
If you're currently reviewing your SAN topology with an eye toward scaling beyond a single fabric, there are a variety of technologies and products that can help you accomplish your goal. There are also a few pitfalls to watch out for, both during the initial assessment and the actual deployment. Here are a few things to keep in mind:
I. Reasons for scaling beyond a single fabric
II. Possible architectures
III. Key technologies
Even if you are not planning on combining
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devices from different fabrics, some upfront planning now can reduce, if not eliminate, future interoperability challenges. Remember that:
For more information:
Checklist: Five steps to maximizing disk capacity
Storage Boot Camp: One-stop training for storage pros
Tip: How to plan for I/O-intensive environments
About the author: Greg Schulz is a senior analyst with the independent storage analysis firm, The Evaluator Group Inc. Greg has 25 years of IT experience as a consultant, end user, storage and storage networking vendor, and industry analyst. Greg has worked with Unix, Windows, IBM Mainframe, OpenVMS and other hardware/software environments. In addition to being an analyst, Greg is also the author and illustrator of Resilient Storage Networks, Greg has contributed material to Storage Magazine. Greg holds both a computer science and software engineering degree from the University of St. Thomas.
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