Network Attached Storage (NAS)

NETWORK ATTACHED STORAGE(NAS)

3/13/2012
1 Student ID : 1032174
Name : Sandeep Gopalreddy

Outline
 Definition
 Introduction
 NAS Architecture
 NAS Framework
 Difference Between NAS And SAN
 Managing NAS
 NAS Security
 Benefits And Drawbacks
 Future Enrichment
 Conclusion
 References 2

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Definition
 A storage device which attached directly to a network,

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called network attached storage(NAS)

 NAS provide file access services to computer system and
act like a storage element –SNIA(Storage Network
Industry Association)

 NFS (Network File System) is one of the common
Network Protocols implemented on NAS.

 NAS is used to access and store different type of data
over a network. It contain one or more hard disks. 3

Introduction
 Originally NAS have the fixed disks, RAID arrays magnetic
tape drives which are exactly connected to the

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networks(Eg.SAN and other networks).

 NAS have its own LAN ip address for RAID configuration
which is attached to the administrator computer that provide
applications to network workplace clients.

 Nowadays electronic data rising frequently, so reliable data is a
essential for small business.

 NAS device is most efficient way to centralize, share and protect
information. Compared with DAS NAS solutions are easier to
manage and improved performance. 4

NAS Architecture

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NAS Framework

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 NAS device has a printed circuit board that removes TCP/IP
functions from a microprocessor. This high end version is
able to serving the files in web browsing (e-mail) and huge
file transfers between clients.

 RAID Arrays : One or more redundantly aligned independent
hard disks, It will defend you from losing when an entity
hard disk fails in the NAS device.

 Operating System : It is configured to present a computing
background for network attached storage device
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NAS Components

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 Data reception component.

 Data interception component.

 Intermediate component.

 Data identification component.

These are components for configuring the NAS system.
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Difference between NAS and SAN

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Managing NAS

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 NAS Installation : firstly we need to prepare our
network then install the proper operating system.

 Configuration : We can use different type of
interfaces for NAS configuration.

 Interfaces : Console, Remote cell(rsh), comand line
interface(CLI), HTTP(hypertext transfer protocol)
and secure shell(ssh).

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Managing NAS (cont..)

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 Applications : NAS server need some applications for
accessing data. These applications gives easy way to
access their files from everywhere in the network
environment.

 Examples :
Home directories
Email
Database

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Maintenance

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 For the reliable file sharing and access speed , NAS
system need day to day maintenance.

Such as,
 Analyzing and monitoring the performance.

 Hardware and software failures.

 Performance tuning.

 Storage management and user support.

 However once we configured the NAS system then its
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very easy to maintain.

NAS Security

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 Every organization and industries mostly depend upon
security feature and NAS device also face some security
challenges as other network components

 NAS system uses strong cryptography for data hiding
from unauthorized users.

 NAS have some main protection process in these areas
Physical security.
General network security.
Access control lists. 12

NAS Security(cont..)
 Physical security :

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NAS device should be placed in separate room, where
only authorized access allowed.

 General network security :
This is the traditional networking security method where
the system administrator make sure that these devices
are accessed by only companies ip addresses.

 Access control list :
Administrators should create a complex password to
secure the access to the NAS device.

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Benefits of NAS

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 Network attached storage is very simple to share files
anywhere on your network in less time by applying
power and configuring a few settings.

 A reliable and efficient network saves your organization
time and money.

 It is very low cost to add additional storage drives in to
the NAS system.

 The NAS storage is shared by multiple clients and
servers. 14

Disadvantages of NAS

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 The file transfer speed is not as fast as DAS(direct
attached storage).

 For using NAS device people should know some basic
knowledge about computer networking.

 System available features depend upon the NAS chip and
firmware.

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Future Enrichment

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 In high confidential Zone many companies don’t use
NAS system because sharing of data will become a
problem.

 A Research & Development team continuously
developing NAS system for future enhancement.

 This development makes NAS system more faster,
flexibility and high functionality.

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Conclusion

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 Nowadays NAS is a new concept for the computer
network. This concept used for development and
growth of computer networks.

 This NAS system is becoming a initial part of the
small scale industries and computing environment.

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References
 Available online at

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www.freepatentsonline.com/y2010/0070466.html

 “Using SANs and NAS” W.curtis preston, O‟Reilly
Publisher, First edition 2002,isbn: 0-596-00153.

 www.pdl.cmu.edu/pp2-ftp/NASD/cmu-cs-97-185.pdf.

 „Mission critical network planning‟ by matthew liotine

 www.brighthub.com/computing/smb.security/articales/23
63.aspx
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Network Attached Storage (NAS)

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