Designing Storage Area Networks: A Practical Reference for by Tom Clark

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By Tom Clark

Designing garage sector Networks, moment version, succinctly captures the most important applied sciences which are riding the garage networking undefined. Tom Clark's works are assisting to coach the IT group to the advantages and demanding situations of shared garage and are instructed examining for a person wishing to appreciate this interesting new technology.Fibre Channel SANs became a mainstay on the backend of the largest enterprises in the world. the second one variation of Designing garage zone Networks brings the subsequent wave of connection (IP) issues and administration into context, aiding the person to speedy comprehend all of the merits sooner than them.Designing garage quarter Networks, moment variation, offers a realistic roadmap in the course of the ever-changing panorama of SAN know-how. the hot Fibre Channel, IP, and virtualization tasks lined during this paintings will allow clients to enforce finished shared garage options that decrease administration overhead and cost.Storage zone Networks (SANs) are actually famous because the most well liked resolution for gratifying associations' and agencies' severe datastorage wishes. no matter if powered via Fibre Channel or TCP/IP and Gigabit Ethernet know-how, SANs some distance exceed the services of conventional garage entry equipment. SANs are fast turning into the answer of selection for organisations that require high-volume data-handling capacity.Written for community builders, IT specialists, directors, and executives, this up-to-date and enormously accelerated version of the best-selling Designing garage zone Networks is going some distance past a directly description of technical requisites and criteria. The textual content bargains functional guidance for utilizing diversified SAN applied sciences to unravel present networking difficulties in large-scale company networks. With this ebook you are going to find out how the applied sciences paintings and the way to prepare their elements into an efficient, scalable layout. In doing so, you can find ultra-modern top equipment for dealing with garage zone networks, together with new troubleshooting techniques.Designing garage sector Networks, moment version, additionally beneficial properties distinct case stories that reveal how SANs can resolve a few quite often encountered company demanding situations, together with LAN-free and server-free tape backup, server clustering, and catastrophe restoration. As an information-systems specialist, you want to continue velocity with this robust, evolving expertise.

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Extra resources for Designing Storage Area Networks: A Practical Reference for Implementing Fibre Channel and IP SANs

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NAS resources are shared using NFS or CIFS file transport protocols. • NAS enables cross-platform access to common data. • The NAS architecture is based on a thin server processor with attached storage resources. • NAS products may use Fibre Channel or any SCSI interconnect as a back-end architecture for higher-speed access to disks. Networking behind the Server • SANs are a new type of network optimized for storage. • SANs may use Fibre Channel, Gigabit Ethernet, or a combination of both. • SANs enable new storage models such as server clustering and LAN-free tape backup.

As shown in Figure 2-10, a NAS head still performs its traditional role of file serving, but its storage is no longer hidden within the NAS enclosure. This lets you carve out part of the storage capacity for file requests while leaving the remainder available for block access. Figure 2-10. A NAS head with shared SAN storage 35 36 The top end of NAS product offerings have used Fibre Channel arbitrated-loop disk drives for block storage. This approach results in higher performance and scalable storage capacity, but it presents vulnerabilities in the event of loop failure.

For host bus adapters, this function is typically fulfilled by the device driver provided by the vendor. FC-3 is under development and may include facilities for data encryption and compression. The FC-2 layer defines how blocks of data handed down by the upper-level application will be segmented into sequences of frames for hand-off to the transport layers. This layer also includes various classes of services and flow control mechanisms. The lower two layers FC-1 and FC-0 focus on the actual transport of data across the network.

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