File Sytem and Its types

FileSystem. You just read the title and thinking “Huh! It’s a big word and only for windows troubleshooters and geeks, I am just an average user, what I have to do with this”. Am I right? Well, two things:-

If I am wrong: It means you have an interest in this post so go on reading and write down your opinion too in the comment box below.

What is the FileSytem or File System

A file system (sometimes written as filesystem) is a method of storing and organizing arbitrary collections of data, in a form that is human-readable. A file system organizes data into an easy-to-manipulate database of human-readable names for the data, usually with a human-readable hierarchical organization of the data, for the storage, organization, manipulation, and retrieval by the computer’s operating system. Each discrete collection of data in a file system is referred to as a computer file.

This is what Wikipedia says about FileSystem. Easy to grab ? I don’t think so. Let’s see how we can digest it more easily.

Think about the webpage you are reading or a newspaper. What it contains ? English Letters. Some Caps and some small. Those few characters together makes a word and fa ew words makes a sentence. Few sentence makes a paragraph and then a set of the paragraph makes a human readable page. I would say the more effective word would be Humanly Understandable because a human can even read all the words and letters even if they are not in the correct order but cannot understand it easily until those are in correct order. A newspaper or webpage also have something called “homepage” which have an index of what your site or papers internal pages contain otherwise you wont be able to go through the inner articles/news

Same thing goes for the computer as well. Assume

English Letters (A,b,c,d) = bits
Words (Collection of letters) = Bytes (8 bits = 1 Bytes)
Sentence (collection of n Words) = Sector (collection of 512 Bytes)
Paragraph (collection of sentences) = Cluster ( collection of n sector)
A Complete article (many sentences) = A file (Collection of clusters)

On top of the above,

The way all the raw letters are organized on this webpage is called “Script”. There are different types of scripts. The Script we use is “Roman”.

The way all raw data are organized on the hard disk is called “FileSystem”. There is the different type of “File system Formats”. The file system Microsoft windows use is called as “windows filesystem format”. The File system formats comes under this is “NTFS” , “FAT”, CDFS and UDF File system formats.

So, Basically, the way your files are stored on your hard drive is handled by your file system.A good file system format should have below features :-

Recoverability : Ability to recover the data without much hassle in case of accidental deletes.

Security : Nowadays, Security is a big concern so it should meet the security criteria’s to use the computer more efficintly in multi user environment as well as a single user.

Data Redundancy and Fault Tolerance : will we say a file system an ideal FS without Data Redundancy in la large server environment

Compression : To reduce the disk space utilization and squuze down the data in small chunks compression is almost must.

Encryption : Capability to encrypt the data o file system level should be a feature of an ideal FS for mission critical servers.

Large Files : Nowadays, we plays in large files. A file system not supporting large files cannot be considered a good FS to work with.

Indexing : Last but not least. Without a good index, It won’t be easier to find things from a large store room.

The Good news is, NTFS file system used nowadays in windows meets all the criteria above

I think above will give you a basic idea of what file system means. In further posts, we will see each file system formats in details with the comparison.

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