Efficient file management is essential to any system that expects to store data.

Question

Efficient file management is essential to any system that expects to store data. Chapter 17 covers in detail how files are stored on hardware and accessed through software. Section 17.3 starting on page 555 in our textbook discusses several types of file access.
Do some research and find a computer system/piece of software that interests you. For example, Microsoft's Exchange Server comes to mind as well as the FBI's desire to have backdoor access to iOS that has made a lot of headlines. Research which type of file access is used in the system you researched and why. Is the method used the most efficient type of access? Why or why not?

Explanation / Answer

File access in small websites(ecommerce) :

Direct access file system(DAFS) is a network file system which is used to improve the performance by allowing application to transfer data through operating system control,buffering indeed this creates a loophole which effects the I/O throughput. DAFS uses virtual interface(VI) to transfer the data without using operating system. Some of the applications where the direct access is used are:

a)Internet
b)E-Commerce Applications
c)Database Applications

DAFS works with any interconnection that supports virtual interface including ethernet. Let us consider small businesses which have small database to store the details of their website. In this case they prefer "direct access" because it provides fast access to files and can access huge amount of data at once.Anyone can read and write the records in a rapid manner. For databases that handle huge amount of data "direct access" seems to be very useful.

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