Storage Area Networks For Dummies by Christopher Poelker, Alex Nikitin

By Christopher Poelker, Alex Nikitin

If you’ve been charged with establishing garage quarter networks in your corporation, studying how SANs paintings and dealing with facts garage difficulties may appear difficult. Storage region Networks For Dummies, second Edition involves the rescue with simply what you must be aware of.

Whether you already a piece SAN savvy or you’re an entire amateur, here’s the news on how SANs get a better price, tips to enforce new applied sciences like facts de-duplication, iScsi, and Fibre Channel over Ethernet, the best way to increase SANs that might reduction your company’s catastrophe restoration plan, and masses extra. for instance, you could:
* comprehend what SANs are, even if you would like one, and what you want to construct one
* learn how to use loops, switches, and upholstery, and layout your SAN for height functionality
* Create a catastrophe restoration plan with the precise instructions, distant website, and information replica ideas
* notice find out how to attach or expand SANs and the way compression can decrease bills
* evaluate tape and disk backups and community vs. SAN backup to decide on the answer you would like
* learn how information de-duplication is sensible for backup, replication, and retention
* stick with nice troubleshooting easy methods to assist you locate and connect an issue
* make the most of a thesaurus of all these pesky acronyms

From the fundamentals for rookies to complicated positive factors like photograph copies, garage virtualization, and fending off difficulties sooner than they occur, here’s what you must do the task with self assurance!

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The GLM converts the data from digital ones and zeros into a serialized bit stream to be transmitted over the optical cable as pulses of light. The optical Fibre Channel cable connects the HBA in the server to the gigabit interface converters (GBICs) located in the switches that make up the fabric layer of the storage network. Chapter 2: SAN Building Blocks The GBICs convert the optical light pulses back into digital data so the switches’ firmware (a specialized type of low-level operating system used in intelligent devices) can read the address information with the Fibre Channel frame to see where the data is destined, and then route the data through the switch to the port that connects to the proper storage device.

These are usually newer applications, designed specifically for SAN capabilities: ✓ Cluster applications: Cluster applications are created by tying a group of servers together via a fast network and then allowing those servers to access the same disks’ storage where the application is installed. This allows for very scalable and highly available applications; if one of the servers fails, another server in the cluster can pick up where the first one left off. GRID computing (mentioned earlier in the chapter) is another example of applications that need a SAN to work right.

Most vendors’ Web sites offer drivers and firmware that you can download. Follow the steps in the manual that comes with your HBA for instructions on how to use the BIOS firmware’s update utility to update the BIOS. The transmission cable is connected to this card via a Gigabit Interface Converter (GBIC), which is either fitted into a slot or soldered onto the card itself. The cables are inserted into the GBIC in the adapter. The HBA uses “driver” software running on the operating systems to allow the operating system to work with the disks in the SAN.

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