1. NETWORK ATTACHED STORAGE(NAS)
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1 Student ID : 1032174
Name : Sandeep Gopalreddy

2. 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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3. 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

4. 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

5. NAS Architecture
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6. 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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7. 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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8. Difference between NAS and SAN
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9. 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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10. 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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11. 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.

12. 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

13. 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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14. 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

15. 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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16. 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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17. 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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18. 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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