Lrwxr-xr-x 1 root staff 17 Aug 11 17:00 Latest -> -170010Īs one can see, the local backups performed inbetween have not been included in the external drive. Backup finished, checked the contents of the external backup drive $ ls -l '/Volumes/Time Machine Backups/Backups.backupdb/' | tail 6 root staff 204 Aug 11 14:41 6 root staff 204 Aug 11 17:00 -170010 I reconnected my backup drive and clicked "Back Up Now" I checked the contents of my /.MobileBackups folder # ls -l /.MobileBackups/Computer/ | tail 3 root wheel 102 Aug 11 15:36 3 root wheel 102 Aug 11 16:36 -163653 So, I investigated part 1 of the question: The backups are not merged into the external TimeMachine backups when the external disk reappears. They are really meant to help you recover a file instead of your whole filesystem. It's also worth noting that I don't think they count as real 'backups' in the sense that you can't restore to them the same way you can restore to a time machine backup from the Recovery HD. In each case, Time Machine works behind the scenes to get the job done. Apple designed Time Machine to be resilient, so it doesn’t skip a beat if one or more of the destination volumes you use for backups isn’t always available. Time Machine keeps these hourly backups for the past 24 hours, then keeps a. Once the first backup is complete, Time Machine checks your Mac for new, changed, and deleted files once every hour. This initial backup can take some time, so be patient and allow it to finish.
#How does timemachine work for mac full
Perhaps the simplest way is to attach the drive to one Mac, let Time Machine run a backup, then disconnect the drive and repeat the steps on another Mac. Time Machine performs a full backup of your Mac when it is first set up. We may see that in the future they merge back into regular Time Machine backups as Lion matures more. To back up different Macs using Time Machine, you can: Do it manually. If your computer really needs the space I assume that it will get rid of some of its snapshots to make room. To learn more about this topic visit the following article:How to use Tim.
#How does timemachine work for mac how to
I think this is because the backups are supposed to be expendable. Learn how to set up Time Machine on an external storage device to back up your Mac.
Looking in the info bar at the bottom of a Finder window showing your root drive will show that you have more space than something like iStat Nano will show on Dashboard. As far as Finder is concerned, the space is not used. I do think that they are supposed to merge with themselves the way that Time Machine backups do, to save space, merging into daily and weekly backups instead.
You can see both when you're in Time Machine and "About This Mac" shows that they still exist after multiple backups to an external harddrive. I also thought that the Local Snapshots were supposed to merge into your Time Machine backups but it seems, in my experience, that they don't. Time Machine is the backup mechanism of macOS, the desktop operating system developed by Apple.The software is designed to work with both local storage devices and network-attached disks, and is most commonly used with external disk drives connected using either USB or Thunderbolt.
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