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 ?
As the amount of NAS storage under management has grown, enterprise IT groups have been continually challenged by the complexity of managing a large numbers of discrete file systems and by the on-going cycle of adds, moves and changes across these systems.
The key to DAS architecture is that all the storage is directly controlled by the PC or server, and not mounted remotely on a network node like NAS.
We are excited that Hitachi Data Systems has selected NSS network attached servers to complete their NAS offering.
With this broad selection, how does an IS manager make sense of SANs, NAS, and other types of storage subsystems?
Also, some NAS vendors have addressed this issue of preserving the meta-data working with backup software vendors to port agents to the NAS operating system.
Our work has shown that inserting an intelligent management appliance (in this case, a file director solution) directly into the network can deliver a transparent and highly effective solution to address the existing challenges of enterprise NAS.
Wasabi Storage Builder for NAS provides support for client workstations running all mainstream desktop and server operating systems including Microsoft(R) Windows(R), -Linux, Solaris, HP-UX, Mac OS X, FreeBSD and Wasabi Certified(TM) BSD.
One new tactic being taken is to implement multiple servers (usually between 3 to 10) in order to improve performance and scalability, with the goal of introducing parallelism into the NAS file-serving process by having lots of CPUs working together on the problem.
International Data Corporation (IDC) has projected that the NAS market will grow from $850 million in 1999 to $6.
NAS fliers are easier to set up, modify and change than direct-attached storage can be, and in spite of high price tags on upper-end fliers they can lower total cost of ownership (TCO).
The CrosStor and Adaptec collaboration will result in external storage solutions that communicate at both the file level (NAS) and block level (SAN) over standard Ethernet networks, thereby driving the convergence of NAS and SAN.
NAS Reference Design Includes Complete Software Solution, Addresses Growing Market for Consumer Storage and Management of Digital Multimedia Content