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velocityg4

macrumors 604
Dec 19, 2004
7,336
4,726
Georgia
If you're concerned about someone gaining access to your backup. Then it is a good idea. Otherwise I wouldn't bother. I don't know if there is a performance difference. Probably not much since any semi-modern Mac should have hardware accelerated decryption/encryption with the CPU.

I only bother encrypting my laptop and locking the firmware. Because I want it to be a useless paperweight if someone steals it. Backups and desktops I'm not too concerned about since they are at home. Backups are stored in a safe when not currently backing up. Well secondary backups are in the safe. My primary backups are to my server. Also in computer to second internal drive on desktops.

Backup method is more important. Unless you really need the revision history with time machine. I'd suggest using Carbon Copy Cloner or SuperDuper. That way you'll have bootable backups. Backups are also way faster than Time Machine backups. Personally, I use FreeFileSync for manual backups. I don't need a bootable backup and it is really fast. The downside is that it is rather complex to setup.
 

BigMcGuire

Cancelled
Jan 10, 2012
9,832
14,032
Why not? That's like asking why would you lock your important documents in a desk drawer at your house. Some people do, some people don't. I'll encrypt where I can encrypt.

Also highly recommend Carbon Copy Cloner. Don't just have one backup. I personally use BackBlaze, TimeMachine, and have everything in iCloud. I also used to CCC to an external disk up until very recently (gave the disk away (after formatting it)). :p
 
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