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<blockquote data-quote="MacInWin" data-source="post: 1786179" data-attributes="member: 396914">From the CCC help files at the website:So CCC does, by default, use the UUID but with caveats and a user option to turn that off. And networked drives without UUID get treated as just named drives by default, along with drives formatted other than for macOS. I wonder if it does that if the internal drive is APFS but the backup target drive is HFS+? Be interesting to know for sure, but not critical to operating the software.I have experienced drive issues with TM before and I have successfully cloned a dying TM Backup drive to a different drive and just replaced the failing drive with no protest from TM by giving it the same drive name. So TM either doesn't care about UUID, or is just happy to find a backups.backupdb to use at the path it was given to use. For networked drives, TM completely changes the backup to sparcebundle, so that's a whole separate approach to the drive situation.So, it would seem that SOME things use UUID, and some things don't. Nothing constant in the world of computing, ever. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile&nbsp; &nbsp; :)" loading="lazy" data-shortname=":)" /></blockquote>

[QUOTE="MacInWin, post: 1786179, member: 396914"] From the CCC help files at the website:So CCC does, by default, use the UUID but with caveats and a user option to turn that off. And networked drives without UUID get treated as just named drives by default, along with drives formatted other than for macOS. I wonder if it does that if the internal drive is APFS but the backup target drive is HFS+? Be interesting to know for sure, but not critical to operating the software. I have experienced drive issues with TM before and I have successfully cloned a dying TM Backup drive to a different drive and just replaced the failing drive with no protest from TM by giving it the same drive name. So TM either doesn't care about UUID, or is just happy to find a backups.backupdb to use at the path it was given to use. For networked drives, TM completely changes the backup to sparcebundle, so that's a whole separate approach to the drive situation. So, it would seem that SOME things use UUID, and some things don't. Nothing constant in the world of computing, ever. :) [/QUOTE]

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