STORAGE AREA NETWORK FUNDAMENTALS BY MEETA PDF

Start your free trial Book Description A guide to planning, implementing, managing, and using storage area networks to increase the efficiency of your network infrastructure Gain in-depth coverage of SAN fundamentals, topologies, implementation and management techniques, and products Build and sharpen your troubleshooting skills for data-mining, online transaction processing, imaging, data warehousing, and other highly data-intensive applications Understand how to implement the Fibre Channel and iSCSI protocols, which are key to any SAN solution Learn current industry implementation and application standards, as well as future advances During the last decade, a multitude of changes in computing technology and the globalization of business through the Internet have resulted in a tremendous growth in storage requirements. This has forced many organizations around the world to reassess the way they view their storage environment. Data accessibility and availability for these applications has to be fast and efficient. Clearly, the ever-increasing information access requirements have had a profound effect on most data centers. As a result, many organizations are searching for cost-effective ways to ensure high data availability and reliability. This book covers the topologies, protocols, and products required to implement and manage efficient SANs.

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Along with optical cables, Fibre Channel products enable network administrators and designers to develop solutions to storage problems related to performance, distance, backups and restoration, bandwidth, and security.

For example, Fibre Channel switches play an important role in enhancing the performance of database servers by switching data queries and their results much faster. Understanding the purpose and the capabilities of each Fibre Channel device will help you make effective choices while designing a SAN. With the infiltration of SAN and Fibre Channel technology in corporate storage solutions, many vendors have jumped into the field of Fibre Channel devices. You need not restrict yourself to the Fibre Channel products offered by one single vendor.

As a SAN designer, an intelligent mix and match of compatible products will help you to implement a cost-effective and high-performance storage solution.

Find out here. PCI-MCA is a bit, high-speed interface between the processor of a computer and the attached peripheral devices and expansion cards.

SBus facilitates the transactions between the processor and the attached peripheral devices. SBus can also help the processor in identifying the corresponding device drivers of the attached devices.

In addition to acting as the physical interface between the host bus and the underlying Fibre Channel link, other functions of HBAs include the following: Initialization of Fibre Channel nodes and ports onto the underlying arbitrated loop or Fabric. These addresses help the Fabric in identifying a node or a port before the node or port has been initialized by the loop or has attempted a Fabric logon.

Interpretation of incoming data streams by performing context switching. When context switching is done at the HBA level, a significant amount of switching overhead is reduced.

The entire concept is similar to multitasking. However, the basic difference between multi-tasking and context switching is that in multi-tasking, inactive programs continue to run in the background. In contrast, in context switching, any inactive program is suspended until it becomes active again. These criteria include the following: Physical links supported—Fibre Channel physical links include copper links, single-mode fiber-optic links, or multi-mode fiber-optic links.

NOTE: IPI is a high-bandwidth interface between the host computer and its peripheral devices hard drives, tape drives, optical libraries, and so on that supports transactions ranging from 3 to 25 Mbps.

In addition, SB-2 also facilitates long-distance data exchanges. Number of connections supported—Connections can be a single node to Fibre Channel link connections, multiple connections, or multiple switched connections. With an increase in the number of vendors manufacturing Fibre Channel products, SANs are growing heterogeneous in nature. This implies that SANs are using more and more varied hardware and software platforms.

Therefore, of the many HBAs that are available today, it is very important to choose HBAs that can support a wide variety of platforms. Several vendors offer a variety of HBAs.

Figure shows an HBA. As a result, the data transported over Fibre Channel links is sometimes referred to as gigabit transport. Fibre Channel connectors play an important role in facilitating the gigabit transport between two communicating ends. The connectors provide an interface that converts any type of communication transport into gigabit transport.

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Storage Area Network Fundamentals

Along with optical cables, Fibre Channel products enable network administrators and designers to develop solutions to storage problems related to performance, distance, backups and restoration, bandwidth, and security. For example, Fibre Channel switches play an important role in enhancing the performance of database servers by switching data queries and their results much faster. Understanding the purpose and the capabilities of each Fibre Channel device will help you make effective choices while designing a SAN. With the infiltration of SAN and Fibre Channel technology in corporate storage solutions, many vendors have jumped into the field of Fibre Channel devices. You need not restrict yourself to the Fibre Channel products offered by one single vendor. As a SAN designer, an intelligent mix and match of compatible products will help you to implement a cost-effective and high-performance storage solution.

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