babowa wrote:
All good points. Some more detail on each...
No, you do not need to partition anything if you just have one type of backup on the drive.
Correct. As for the downsides of partitioning, partitioning is a favorite way to lose data across all partitions, when partitioning goes sideways, and partitioning goes sideways more often than any of us might prefer.
And a partitioned backup device that fails fails all partitions. Which means two sets of backups co-located on one hard disk can all be lost in one hard disk failure.
I would certainly recommend that you store anything you do not want to lose on an external drive rather than icloud as that is basically a syncing mechanism. If you delete something from your Mac, it will also be deleted in icloud.
While iCloud is a synching service and which surprises a number of us that (once) thought a file or photo delete might be device-local and not across all devices we’re using, Apple has implemented facilities to archive the iCloud data, and iCloud can restore some deleted data, including restoring deleted photos.
And, best check this out: you said you like iPhoto? That was replaced with the Photos app in Yosemite - is that what you are using?
Yeah; that iPhoto app usage is going to be a problem just as soon as Catalina or Big Sur arrives in scope here, such as can happen “suddenly” with the arrival of a newer replacement Mac. iPhoto cannot run on Catalina and later.