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Probably not; I am very disorganised and find the management of data very stressful, in that I'm terrified of losing it.
I am going to start afresh: clean install of High Sierra and new process for backing up. I was going to use the following system: 4TB cloud drive in loft or locked cupboard for Time Machine backups; 1TB usb drive carbon copy of 1TB iMac hard drive, replaced when full + iMac clean install (so every couple of years); and the most precious stuff (mostly pics and vids) to a Cloud account.
Does that sound like a good process?
Timmy2wheels
chez_jay
Doesn't sound like you are looking at the problem in the right way to be honest. Multiple backup copies in different places are in themselves a good thing. Why do you want to manually dedupe them?
Automatic deduping at file or block level while backing up, to save storage space, is a different issue (Time Machine only does file level dedupes via hardlinks I believe).
Or are you actually asking about deduping your primary files and not your backups?