NAS vs. SAN vs. DAS
Santosh Naidu P Amulya P
MVGR College of Engineering
ABSTRACT: In this World Wide Web, storage of data is one of the important tasks while maintaining the network systems. While storing the data external devices, so many factors need to be considered such as cost, performance, and speed and recovery time. Not all the organizations or business can invest more money for storage of data and recovery too. The devices should be faster enough not only while storage but also for recovery. Based on the amount of data either in gigabytes or terabytes the devices should be vulnerable to errors and system attacks. There are three different types of storage devices available for the networks.[2] One can choose Network attached storage, Storage area networks and Direct attached Storage too. Each of the devices has its pros and cons. Based on the requirement the storage device can vary. [1][4][15]
Network Attached Storage (NAS):
Network attached storage devices are the external disks that are attached to the network directly or through wireless to your router. Any computer connected to the network as the storage device can access the device and can map the device on these systems too.[4]
The size of the storage devices is similar to the hard disks that use in the normal systems. Usually the sizes of these devices found are 160GB through 750GB. The cost for buying these devices usually starts at $75. [4]
Capabilities of the storage device extend from serving and streaming files to the systems. Most of the top storage devices handle the backups along with the online storage services such as sharing, security, customization and even Wi-Fi services too.[3]
As the NAS devices uses network protocols while transferring the data, the operating system in which it runs can be Windows, Mac or Linux too. They can access the storage without any installation of special drivers. Usually, the connection
References: 1. What is SAN?. n.p,n.d. Web. 22 Jun 2012. . 2. Saurabh Suman, Mahesh Kokate, Rajni Kori, Pravin Malviya. Analysis of Storage Devices. n.p. Mar. 2011. Web. 23 Jun.2012. . 3. "SAN vs DAS: A Cost Analysis of Storage in the Enterprise". SAN vs DAS: A Cost Analysis of Storage in the Enterprise. 1900-1-0. Retrieved 2010-01-28. 4. SAN vs NAS. Amazon,n.d. Web. 22 Jun 2012. http://askville.amazon.com/SAN-StorageArea-Network-NAS-Newtwork-attached/AnswerViewer.do?requestId=7617867 >. 5. Bradley Mitchell.SAN vs NAS - What Is the Difference.About.com, n.d. Web. 23 Jun 2012. . 6. Bradley Mitchell .Introduction to NAS - Network Attached Storage. n.p, n.d. Web. 22 Jun 2012. . 7. Jon L. Jacobi. Network-Attached Storage: Today’s Best Boxes. PCWorld, 27 Mar.2012. Web. 23 Jun.2012. . 8. Dense-Wavelength Division Multiplexing. Broadband Crossing,n.d.Web.22Jun2012. . 9. The primary difference between NAS and SAN solutions is the type of access protocol. Computer Exchange, Inc, n.d. Web. 24 Jun 2012. 10. Direct-Attached Vs Network attached Storage. iOmega, n.d. Web. 24 Jun 2012. . 11. eSATA. The serial ATA international Organization. n.p,n.d. Web. 24 Jun 2012. 12. NAS, SAN, RAID... what are all these acronyms. Ziff Davis, Inc, n.d. Web. 25 Jun 2012. . 13. Network Attached vs. Direct Attached Storage. High-Rely, n.d. Web. 24 Jun 2012.. 14. IT Buyers Continue Shift to NAS, SAN and Cloud. IT marketing world,n.d.Web. 24 Jun 2012. . 15. Duran,Alabi. New Drivers in Information Storage. n.p, n.d. Web. 24 Jun 2012. .