Mac encrypt time machine backup

How to Back Up FileVault-Encrypted Disks With Time Machine

Is it redundant to do encrypted backup from an already encrypted computer using File Vault? Should I chnage the time machine backup to be encrypted?

The Slow, But Non-Destructive Option: Encrypt Your Current Backups

Any other things to consider in this decision? One of the basic issues with encryption in general, is it slows down everything. On much of todays hardware this is not as painful as 5 or 10 years ago considering the number of cores available in the CPU and amount of RAM. IMO If you encrypt the internal disk then any backup off of the system should also be encrypted, otherwise why are you encrypting in the first place.

How to Encrypt Your Mac’s Time Machine Backups

It's not being double encrypted if you do, but if you don't encrypt the backup then anyone who has access to the external backup can access its contents if not encrypted. I would recommend to either Create an encrypted sparse bundle image on your external disk and use that as your backup drive.

I wouldn't recommend monkeying around with disk images- just encrypt the external disk and add the password to your keychain so it mounts at login automatically. Hefewe1zen Hefewe1zen 4 Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

Stop FileVault Encryption Process

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Use This Tip to Encrypt Your Time Machine Backups

My question still remains: I want to use the filesystem encyrypted format to backup my machine without Time Machine needing to encrypt the disk as a post process operation. Is this possible? By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies.

Home Questions Tags Users Unanswered. Is it OK for Time Machine to take a long time to decrypt a freshly formatted encrypted disk? Ask Question.


  • Safeguard a Time Capsule or other network disk.
  • How to Encrypt Your Mac's Time Machine Backups.
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It seems, judging from the question and answers here, that what I'm doing should be reasonable: But when I added the disk via Time Machine, selected to not encrypt it, and entered my encryption password, I get a message saying this: This Core Storage logical volume is already decrypting. Online Size: Unlocked Conversion Status: Converting backward Reversion State: Decrypting High Level Queries: Online Size Total: No LV Name: Reversion State: Decrypting and: Conversion Progress: Update After waiting all weekend, the status now shows that the disk conversion process is completed: WDExternalDrive Status: Complete Revertible: Reformatting erases all files on the disk, so do it only if you no longer need the files or have copied them to a different disk.

You may need to provide the password when you connect the disk to your Mac, or when you disconnect the disk or restart your Mac.

If you previously used a Time Capsule or networked disk for unencrypted backups and want to turn on encryption now, Time Machine must first erase the unencrypted backup before starting an encrypted backup. Time Machine works best if you use your backup disk only for Time Machine backups.