Building Storage Networks [Marc Farley] on *FREE* shipping on qualifying offers. Praise for the first edition of Building Storage Networks: This. Book. Language English. Title. Building storage networks. Author(S) Marc Farley. Publication. Data. Berkely: Osborne/ McGraw - Hill. Publication. Date. PDF | On Dec 1, , Vladimir Riabov and others published Storage Area Storage area network as a networked high-speed enterprise infrastructure (NT to understanding and implementing SANs Building SANs with Brocade fi bre .

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Building Storage Networks Second Edition. Read more Distributed Storage Networks: Architecture, Protocols and Management. Read more. Storage Area Networks (SAN) in Germany: A Strategic Reference, Read more Building Storage Networks Second Edition. Read more. This edition applies to the products in the IBM Storage Area Networks (SAN) . Storage area network connectivity. .. Building a smarter cloud.

That's why it must be designed and built right the first time.

After all, the best servers and storage in the world can't do anything without a solid network. To that end, here are a variety of design points and best practices to help tighten up the bottom end. Better manage your company's information overload with our Enterprise Data Explosion newsletter.

Storage Networks: The Complete Reference

All these variations require a network core, so let's start there. The size of the organization will determine the size and capacity of the core. In most infrastructures, the datacenter core is constructed differently from the LAN core.

If we take a hypothetical network that has to serve the needs of a few hundred or a thousand users in a single building, with a datacenter in the middle, it's not uncommon to find that there are big switches in the middle and aggregation switches at the edges.

Two gigabit fiber links to a closet of, say, switch ports is sufficient for most business purposes. In the event that it's not, you're likely better off bonding multiple 1Gbit links rather than upgrading to 10G for those closets.

10 Gigabit Ethernet: Enabling Storage Networking for Big Data

As 10G drops in price, this will change, but for now, it's far cheaper to bond several 1Gbit ports than to add 10G capability to both the core and the edge. In the likely event that VoIP will be deployed, it may be beneficial to implement small modular switches at the edge as well, allowing PoE Power over Ethernet modules to be installed in the same switch as the non-PoE ports.

Alternatively, deploying trunked PoE ports to each user is also a possibility. This allows a single port to be used for VoIP and desktop access tasks.

In the familiar hub-and-spoke model, the core connects to the edge aggregation switches with at least two links, either connecting to the server infrastructure with direct copper runs or through server aggregation switches in each rack.

This decision must be determined site by site, due to the distance limitations of copper cabling. Either way, it's cleaner to deploy server aggregation switches in each rack and run only a few fiber links back to the core than try to shoehorn everything into a few huge switches. In addition, using server aggregation switches will allow redundant connections to redundant cores, which will eliminate the possibility of losing server communications in the event of a core switch failure.

If you can afford it and your layout permits it, use server aggregation switches.

Regardless of the physical layout method, the core switches need to be redundant in every possible way: redundant power, redundant interconnections, and redundant routing protocols. Ideally, they should have redundant control modules as well, but you can make do without them if you can't afford them. Core switches will be responsible for switching nearly every packet in the infrastructure, so they need to be balanced accordingly.

In the event that one core fails, those VLANs will still be accessible. A full discussion of these two technologies is beyond the scope of this guide, but correct configuration of these two elements will have a significant effect on the resiliency and proper operation of any Layer-3 switched network. Minding the storage Once the core has been built, you can take on storage networking. Although other technologies are available, when you link servers to storage arrays, your practical choice will probably boil down to a familiar one: Fibre Channel or iSCSI?

Fibre Channel is generally faster and delivers lower latency than iSCSI, but it's not truly necessary for most applications.

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If you have transaction-oriented applications such as large databases with thousands of users, you can probably choose iSCSI without affecting performance and save a bundle.

Fibre Channel networks are unrelated to the rest of the network.

Then, the switch directs the packet to the right storage system. FC switches are meant to be used with high-performance networks. SAN switches can also be Ethernet based. Organizations can combine many switches to build large SAN fabrics that connect many servers and storage ports.

Complete Reference Books - Storage Networks

Virtual SANs yield a number of benefits, such as ease of management and scalability. For the most part, VSANs are hardware-agnostic.

As long as the hypervisor recognizes and supports the storage hardware, the VSAN can use it, although each vendor has its own requirements. Unified SAN Unified SAN is based on the concept of unified storage , which exposes file storage and block storage through a single storage device, usually a modified network-attached storage appliance NAS appliance.

A converged SAN uses a common network infrastructure for network and SAN traffic to eliminate redundant infrastructure and to reduce cost and complexity.

Converged SANs are almost always based on 10 Gigabit Ethernet , and multiple network ports are sometimes bonded together to increase throughput. SAN pros and cons The main benefit of using a SAN is that raw storage is treated as a pool of resources that IT can centrally manage and allocate on an as-needed basis. SANs are also highly scalable because capacity can be added as required.

The main disadvantages of SANs are cost and complexity.

SAN hardware tends to be expensive, and building and managing a SAN requires a specialized skill set. SAN vs. NAS consists of a storage appliance that is plugged directly into a network switch.

How has the role of SANs in storage networking changed over the past few years?

Although there are exceptions, NAS appliances are often used as file servers , whereas SANs are used for structured data stored in databases. In contrast, NAS storage usually exposes storage as a file system , although some NAS appliances support block storage.

Major vendors and products There has been much consolidation in the SAN vendor market, and it is now dominated by some of the largest IT companies. EMC was the storage array market leader, and Dell EMC now generates the most revenue and has the broadest storage systems portfolio.

IBM and Hitachi focus mainly on large enterprises and mainframe-attached storage, although they have broadened their portfolio with flash arrays for open systems.So, upgrading your home network to MB Ethernet really makes a difference, particularly as gigabit routers are not so expensive anymore.

This is an especially useful approach in small and midsize businesses that may not have the funds or expertise to support a Fibre Channel SAN. This compensation may impact how and where products appear on this site including, for example, the order in which they appear. Java Basics, Part 1 Java is a high-level programming language. Initially, this was due to size.

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