Mac is cool.

No Need to Defrag

Whenever a PC is acting sluggish the first thing you hear people ask is “Have you tried defragging the hard drive?” However, this is not the case with Macs. Based on the proven and reliable Unix architecture with a Mac OS Extended Journaled file system, you don’t have to worry about defragmenting your hard drive to boost access/reading/writing times; it is done for you automatically. (Technically, it is not being defragged but things are just put in their place with journaling) Whenever your mac detects that it is fairly idle, it will start fixing up your filesystem. This might explain some noises coming from your computer in the middle of the night (assuming you left it on).

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