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Storage Distance by Protocol, Part II – Physical Layer

September 9, 2013 at 4:56 pm PST

In the last article, we looked at the big picture of what is involved in creating a SAN distance extension. In this article, we’re going to take a slightly closer look at the physical requirements and with luck we’ll be able to clear up some general confusion and misconceptions along the way.

Puzzle Pieces 2There is a lot of information about these different elements available via a quick search on your favorite search engine. What I find, though, is that there is usually very little context that accompanies the descriptions or, at best, the authors assume that you may have more of an understanding about some of these technologies than you do. In this case, if I’m going to err it will likely be on the side of making it too accessible and in Plain English, which is something I can live with.

As usual, this is a mid-level view. There are many deep dives that will go into each subject in fine-toothed detail available on the web, but we’re going to stay focused on what you need to know for extending SANs across distances.

Again, this is a rather long post, but hopefully it will be useful as a reference point for you. Read More »

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