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Access "Scaling SANs"

Published: 19 Oct 2012

Vertical and horizontal scaling Vertical scaling is accomplished by replacing components with greater resources, such as switches with higher port counts. Horizontal scaling builds out a storage network with additional switches, inter-switch links (ISLs) and so forth. Storage area networks (SANs) must be able to scale as they grow to meet burgeoning storage demands. There are various techniques for scaling SANs from a switch and fabric perspective. The best technique is one that satisfies current storage requirements and accommodates future growth. The basic building block of a switched Fibre Channel (FC) storage network is the FC switch, which ranges in size from a few ports to hundreds of ports. Similar to Ethernet-based networks, an FC storage network (fabric) can be implemented using a single switch or as a fabric network with multiple switches interconnected using inter-switch links (ISLs). We'll focus on scaling individual FC SAN fabrics to add ports to support more servers and storage, and to improve performance. While there are various techniques for... Access >>>

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Features
    • New wave of virtualization by Marc Staimer

      Second-wave storage virtualization products address the cost and complexity related to six significant problems.

    • Switch partitions gain steam by Alex Barrett

      If you're looking to consolidate SANs, without giving up the benefits of keeping your sites physically separate, the new switch partitioning capabilities might be for you.

    • Varieties of data protection

    • Tale of the tape

      Storage magazine's first tape reliability survey reveals that despite its low media cost and portability, many storage pros consider tape a weak link in the backup chain.

    • No-sweat SAN design

      Whether you're planning a new storage area network (SAN) or dealing with the growing pains of an existing one, SAN design tools can ease the process.

    • D2D Backup: Disk's dual role

      In part one of a three-part series on disk-based backup, we describe how SAN disk-as-disk and NAS disk-as-disk work, as well as the pros and cons of each configuration.

    • Scaling SANs

      Horizontal and vertical scaling are two methods of improving a SAN's capacity and performance. We discuss how to choose the appropriate approach for your environment.

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