Why Linux doesn't need defragmenting

This is a simple explanation about why Linux in the main does not defragging:

OneAndOneIs2 - Why doesn't Linux need defragmenting?

Quote:

It's a question that crops up with depressing regularity: Why don't Linux filesystems need to be defragmented?. Here's my attempt at answering once and for all. Rather than simply stumble through lots of dry technical explanations, I'm opting to consider that an ASCII picture is worth a thousand words. Here, therefore, is the picture I shall be using to explain the whole thing:

Nice simple approach to explaining it. I do wish the author had gone into NTFS storage though since no current Windows OS uses FAT anymore.