Indeed, automatic backups which would occur while the first backup is in progress are cancelled.
#HOW TO SET UP TIME MACHINE ON MAC MANUAL#
TMA backup stores always use the case-sensitive variant of APFS, though.Īlthough the first backup is performed automatically by Time Machine, it’s actually scheduled and run as a manual backup, that is to say that it occurs at a fixed time, as shown in the countdown provided in the Time Machine pane, and isn’t scheduled by the normal DAS/CTS system. Backing up your encrypted Data volume to an unencrypted backup store will always elicit a warning notification, but TMA is quite happy to do that if you prefer. You can opt for APFS (Case-sensitive) unencrypted or encrypted, as you prefer. This is because TMA will then thin old backups according to the free space available in its container, and won’t contend for space with your other files.Īlthough you can present Time Machine with an empty container and it will create its own backup volume, you can also make its life a little easier by creating and naming an APFS volume for it. The best way to reserve storage space for other files on that disk is to keep TMA backups in their own container.
In APFS, containers (effectively partitions) are of fixed size, while volumes can grow until they fill the whole container. If you decide that you want to keep anything else there, it’s best at the outset to divide the disk into separate containers, one of which will be occupied solely by your TMA backups. If you present it with an empty HFS+ volume, it will convert that to APFS and use that as your TMA backup store.īefore adding a new backup store to Time Machine, think carefully whether you want to limit the space on that disk which will be used for backups. TMA is now the only means of starting a new backup set in Big Sur.
#HOW TO SET UP TIME MACHINE ON MAC FULL#
Here are the results of a modest-sized first full TMA backup from an M1 Mac mini. As I hadn’t previously analysed an example, it needed to be done. Recent discussion has raised questions over how much quicker Time Machine making its first full backup to an APFS volume (TMA) might be, and whether it uses any new tricks to achieve greater efficiency.
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