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Forum Discussion
Time Machine shows less storage than allocated in OS 6
Both myself and my partner have 500 GB allocated each on our ReadyNAS as Private Time Machines. When I go into Time Machine preferences on macOS, the Time Machine backup on the ReadyNAS displays ...
I am keen to reclaim this space. If there is any additional info I can provide to troubleshoot this descrepancy, please let me know and I will my best to provide it.
IIRC when I first noticed this in the past, I did delete and re-create the Private Time Machine allocations but that didn't fix the discrepancy.
I'm wondering if there is simply a mismatch of the storage units being used (GiB vs GB). But 500 GB would be the same as 465 GiB (not 475). Can you confirm that that you are seeing 475?
Thanks for your reply.
Yes, I am definitely seeing 475 GB but I understand your question, it did cross my mind too.
I can't seem to insert pictures into my posts but I uploaded a couple of screenshots to my gallery on my profile, one from the OS6 GUI and the other from Time Machine.
ChunkySocks wrote:
Yes, I am definitely seeing 475 GB but I understand your question, it did cross my mind too.
I can't seem to insert pictures into my posts but I uploaded a couple of screenshots to my gallery on my profile, one from the OS6 GUI and the other from Time Machine.
I've looked at the screen shots, and of course they do confirm that the NAS shows 500 GB and the Mac shows 475. And the GB/GIB theory would be working in the other direction (Macs use GB/TB; the NAS uses GiB/TiB)
There is another possibility too - SMB space usage reports don't always exactly align with the actual on-disk usage. At least that is the case with Windows - but I don't have a Mac, so I don't know if that's a possibility for Time Machine over SMB. Maybe one of the mods ( JohnCM_S or Marc_V ) can comment, or another Time Machine user here.
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