With very few exceptions, you don't need to defrag on OS X, except possibly when partitioning a drive.Is there a good tool that you can recommend that'll defrag or clean up my MBP???
You don’t need to defragment or optimize your disk when you use Mac OS X. When writing files, Mac OS X optimizes your disk space and avoids fragmenting large files into smaller segments.If your hard disk seems to be slower than it used to be, you may need to repair your disk.
Don't defrag SSDs. You'll wear out the drive faster. And OS X, like Linux distros, doesn't need to defrag, as the file system organizes things automatically.
In terms of clean-up, you can install clean-up apps like Disk Diag and many others.
Another vote for never defragging an SSD - that will dramatically shorten its life, given the excessive write cycles imposed on upon it.
With very few exceptions, you don't need to defrag on OS X, except possibly when partitioning a drive.
The principles and facts still apply.Also no. The section you quoted specifically mentions hard disks and the article you linked to is 5 years old, before Apple started using SSDs.
It's unnecessary for both reasons.Disk defragging is unnecessary for SSDs not because of how OSX works, but because of how SSDs work.