Just wondering what the pros and cons are. I've read a bit about it on the internet but I don't really understand what it does/ whether it's something I should be using.
If you like data loss then go for it.
I would agree with this action. Its better to encrypt only the objects you wish to keep safe and not the entire volume.I use an app called Espionage, it's excellent as it allows you to encrypt individual folders or just password protect them.
I find this a much better option than encrypting an entire drive.
I use FileVault on both my MBA and MBP. No issues and both are still very fast (SSDs).
I see no reason not to turn it on. A lost laptop these days can cause a lot of issues, banking, personal files (resume/photos), etc.
Not everything you do will end up in an encrypted file if you go the partial encryption route and anyone with a little knowledge can find the pieces that land outside it (temp files, internet cache/history, etc).
Desktops and such, well there is less of a risk that they'll be lost or stolen. But laptops, for sure.
Just save the recovery key that it provides you.
The only difference you will notice is that the login prompt is immediate when the computer turns on. This unlocks the encrypted drive and then booting proceeds per normal.
FileVault 2 works just fine. I have no experience with the original FileVault so I cannot comment on how well it works.If you like data loss then go for it.
Does encruting your drive with filevault not slow down preformance with all that encrypting adnn decrypting going on everytime you access the disk ?