NAS buying guide

Storage NAS Upgrades:

NAS Upgrades

This guide provides tips for purchasing NAS hardware, NAS management software and NAS gateways. Each chapter includes specifications for NAS products.


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  • How to purchase NAS

    Pricing and support are two obvious issues to weigh when purchasing NAS products for your storage environment, but there are other important points to keep in mind.

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  • NAS appliances

    NAS appliances are frequently touted for bringing convenience and simplicity to network storage. NAS appliances include their own dedicated disks for storage and RAID, and most NAS appliances can be upgraded with more or larger disks for additional storage space. If even more storage is required, another NAS appliance can be added to the network. However, NAS appliances are file-based and not appropriate for every application. LAN connectivity can also present a potential bottleneck for network users trying to access storage. Consequently, the choice of NAS appliance requires careful evaluation. This guide focuses on specific considerations for dedicated NAS appliance products. You'll also find a series of specifications to help make on-the-spot product comparisons between vendors.

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  • NAS gateways

    NAS storage capacity is expanded by simply adding more disks to the appliance. Obviously, this only allows users to scale up to the capacity limit of the appliance. NAS gateways overcome these inherent limitations of scale and flexibility by utilizing externally connected storage. The external storage may be a standalone disk array, but a NAS gateway might share storage through a storage area network (SAN), allowing users to consolidate their NAS data on SAN storage and realize the benefits of high performance and redundancy. Now that you've reviewed the essential issues involved in any NAS product, this Buying Guide focuses on specific considerations for NAS gateway products. You'll also find a series of specifications to help make on-the-spot product comparisons between vendors.

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  • NAS management software

    Typical NAS management software might automatically discover a vendor's storage resources in a network, manage and adjust RAID configurations, back up NAS contents to standard backup software, track storage utilization and offer capacity growth predictions, and even monitor other storage systems that it cannot directly control. While NAS management software is increasingly versatile, it is also more complex, so the selection process requires careful consideration. Now that you've reviewed the essential issues involved in any NAS product, this Buying Guide focuses on specific considerations for NAS management software. You'll also find a series of specifications to help make on-the-spot product comparisons between vendors.

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