NAS


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NAS

(networking)

NAS

(1) See network access server.

(2) (Network Attached Storage) A file server that connects to the network. A NAS contains the file sharing components of a server and generally does not run applications like a general-purpose computer. However, it is often designed to run NAS-related programs such as backup, cloud synchronization, streaming, surveillance and other services. NAS units generally contain a slimmed-down OS and file system, and they process I/O requests by supporting the popular file sharing protocols, primarily CIFS for Windows and NFS for Unix, Linux and Mac.

Just Plug It In
Using traditional LAN protocols such as TCP/IP over Ethernet, the NAS enables more storage to be quickly added to the network by plugging it into a switch or router. Contrast with SAN. See NAS gateway, direct attached storage and NetApp Filer.


A Raft of QNAP Apps
QNAP makes a variety of popular NAS products from personal storage to enterprise use (top unit). Its QTS operating system supports more than 150 apps covering the categories itemized above.







Network Vs. Channel Attached
Data in a NAS are accessed via the network, whereas storage area networks (SANs) have high-speed connections to huge storage arrays.


Network Vs. Channel Attached
Data in a NAS are accessed via the network, whereas storage area networks (SANs) have high-speed connections to huge storage arrays.







Industrial Strength NAS
Network Appliance popularized the enterprise NAS device. Sophisticated units like this can hold many terabytes of storage and provide mission critical reliability for large enterprises. (Image courtesy of Network Appliance, Inc.)







The Early 2000s
In 2002, Iomega introduced a line of economical RAID-based NAS units for personal and SOHO use. This model included a hot spare ready to replace a failed disk drive. Iomega was later acquired by Lenovo. (Image courtesy of Iomega Corporation.)
References in periodicals archive ?
NAS virtualization products have several key applications and benefits to file storage environments:
NAS installation requires some knowledge of network topology and how IP addresses are provided for the target network.
The Hitachi Freedom NAS may include multiple NAS server engines, in a free-standing or clustered configuration for a High-Availability fail-over mode, depending on the customer's storage capacity requirements.
With the goal of creating an infrastructure-wide approach to NAS management, one needs to realize that device-centric approaches manage files statically linked to a user, while a network-centric approach manages files as dynamically accessible information, regardless of physical location or business purpose.
Starting at under $29,300 for 180GB of storage, the VA Linux 9205 is the first in a family of NAS solutions from VA Linux Systems.
Incorporating Wasabi's innovative Flashware(R) technology, Wasabi Storage Builder for NAS delivers a robust file-based network storage capability that transforms commodity PC server components into cost-effective NAS appliances and NAS heads that scale from SMB market applications to enterprise environments at previously unattainable price-points.
However, when used as a NAS server, this flexibility amounts to overhead unrelated to the core efficiencies of the server, alongside marginal performance.
But NAS cannot safely host all databases, and (as Handel said) "therein lies the rub.
The Cirrus Logic NAS reference design also includes software which provides not only the standard NAS feature set but also enhanced features such as:
NAS devices do not usually provide business continuance features, except in the expensive high-end products.
Compellent's integration of ONStor's NAS Gateway to its storage area network (SAN) delivers scalable storage with transparent, data migration across multiple tiers--allowing users to achieve maximum storage ROI by ensuring that data is stored on the most cost-effective storage tier based on customer usage patterns and policies.
The Storage Works NAS 1000s includes integrated software designed to support a multi-protocol environment, snapshot capability, replication and volume expansion.