Time machine network drive, disk format?

Time Machine can be configured to use a network (SMB) drive. But, I see conflicting information about what format that disk needs to be -- some setups suggest just a regular linux filesystem, others HFS. Then, others suggest installing netatalk.


Can someone clarify?


I am on MacOS Monterey 2.13.1 and my external "server" is a Rasberry Pi 4, the mounted drive is 4TB (Maxtor USB3.0).

Posted on Apr 1, 2022 11:45 AM

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Posted on Apr 1, 2022 12:33 PM

Definitely not Netatalk. It is a hack of AFP and Apple has dropped AFP.

Your SMB server must support the Time Machine over SMB specification. Any current version of Samba should support that. I think 4.8 was the first version that supported it.

Any file system is sufficient, but I would use a modern one—Time Machine won’t be writing directly to it. Time Machine will create a sparse bundle disk image using an appropriate file system (APFS) on the network share.

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Apr 1, 2022 12:33 PM in response to Forrest

Definitely not Netatalk. It is a hack of AFP and Apple has dropped AFP.

Your SMB server must support the Time Machine over SMB specification. Any current version of Samba should support that. I think 4.8 was the first version that supported it.

Any file system is sufficient, but I would use a modern one—Time Machine won’t be writing directly to it. Time Machine will create a sparse bundle disk image using an appropriate file system (APFS) on the network share.

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Time machine network drive, disk format?

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