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Loop switch

Loop switch

If your answer was loop switch, you are correct!

Professor Poelker: A "loop switch" can also handle the FC-AL protocol, and allows the attachment of older FC-AL based SAN gear (like tape drives) to the fabric. The switch assigns a unique WWN for each FC-AL ID on the connection, so that fabric based devices can address the FC-AL based device. Brocade was one of the first to provide this functionality through their "quickloop" protocol in the original 2800 switches.

For more on this topic, click here.

Dig Deeper on SAN technology and arrays

Questions and answers from SAN School Storage area networks (SANs) have the ability to save a company money, hasten backups and help consolidate the data center. But, a SAN is not to be left alone. It's a complex, growing, breathing entity that constantly needs to be tweaked and upgraded.

So what is SAN School? If this is the first time you are asking yourself, "What's a SAN?" -- SAN School is for you. If you are implementing your first SAN and need implementation and migration help -- SAN School is for you. If you are far along in the SAN process and need to extend your SANs or connect SAN islands -- SAN School is for you.

The authors of "Storage Area Networks for dummies", Christopher Poelker and Alex Nikitin, are your SAN School professors. Through 15-minute Webcast lessons, they covered SANs from A to Z, from what a SAN is, to connecting those last nodes for optimal performance.

SearchStorage.com readers sent Chris and Alex received a lot of questions during each SAN School Webcast lesson. Since each lesson only lasted 15 minutes, they weren't able to answer all of your questions. Thanksfully, though, Chris Poelker was kind enough to answer them after each lesson.

The editors of SearchStorage.com have taken each of your questions and Chris's answers and posted all of them for you here. Also, if you missed any of teh SAN School Webcasts, click here

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