It is 15 years since internet pioneer Vint Cerf tore off his shirt to reveal a T-shirt bearing the slogan "IP on everything" at a meeting of the Internet Engineering Task Force. But while Internet Protocol has become a de facto standard for voice and data traffic in general networking, it has failed to make an impression on the ramparts of storage networking.
NAS appliances are frequently touted for bringing convenience and simplicity to network storage. 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. However, NAS appliances do pose some disadvantages. Consequently, the choice of NAS appliance requires careful evaluation. Now that you've reviewed the essential issues involved in any NAS product, this guide focuses on specific considerations for dedicated NAS appliances. You'll also find a series of specifications to help make on-the-spot product comparisons between vendors.
NAS appliances are noted for their convenience, offering dedicated internal storage that is relatively straightforward to identify and manage. The biggest issue for NAS appliances is avoiding network bottlenecks and supporting expansion without having to proliferate additional appliances across the network. The product snapshots in this chapter highlight key specifications for a cross section of major NAS appliance products.
Data storage continues to be a struggle for Sun, according to the company's quarterly earnings report. One bright spot is Thumper, and Sun is working on more products like it.