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What is NAS-

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					?NAS stands for Network-attached storage. This is the name given to contributed data
storage technology which could be connected directly to a PC network and offer
centralized data storage and access to varied network clients.
NAS is a hard drive storage system - including configuration of RAID, with its LAN
IP address than being connected to the computer department that is giving
applications to workstation of network users. It has its own program for mapping and
configuring file locations to network attached equipments. A Network-attached
storage could be included as part of a more complete solution similar to SAN.

Description
NAS varies from traditional file serving and DAS or Direct Attached Storage in that
the OS and other program on the NAS offer only the storage data's functionality, data
access and the supervision of these functionalities. Moreover, the NAS unit doesn't
limit clients to just one FTP. NAS systems typically contain 1 or more hard drives,
often set into logical, superfluous of redundant arrays of independant disks (RAIDs)
or storage containers, as traditional file servers do. NAS eradicates the responsibility
of serving file from other servers on other network and could be deployed by way of
commercial embedded units or through computers running NAS program.
NAS utilizes file-based protocols like NFS or Server Message Block (SMB). Contrast
NAS's file based method and use of well understood protocols that has SAN (storage
area network) that utilizes a block based approach and runs over SCSI over iSCSI or
Fiber Channel.
Minimal functionality or stripped down OS are utilized on NAS PCs or devices that
run protocols or file applications which offer the NAS functionality. A "leaned out"
Free BSD is utilized in Free NAS, for instance, which is open-source NAS software
intended to be organized on computer hardware. Commercial embedded equipments
and consumer network appliances can utilize closed source OS and protocol
implementations.

As these tools have IP addresses, they could be accessed directly.
In a Network-attached storage, since the storage are separately located to the server,
program files are served more rapidly as they are not competing for no different
resources.
Another benefit of Network Attached Storage is that, you can have different servers
with dissimilar OS storage, management and backup of the data can be centralized
even when you're in the environment
Some of the great advantages of this storage device include its expandability. It is so
easy to add more storage. This as well brings an extra fault tolerance level to the
network because you could include mirror RAID features.

If you are interested in learning more about WhatIsNAS web site.

				
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posted:4/23/2011
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