Difference in available storage space between WebGUI and Finder(AFP)

[martin9911]

Running 6.5

A couple of weeks ago I removed a "private time machine" allocating roughly 500Gb. The avaialabe storage in the WebGUI differs about 500Gb compared to what I can see in Finder, mounting a AFP-share.

Any idéas?

/Martin

[mdgm-ntgr · Accepted solution]

The NAS uses base 2 (like most PCs) whereas the Mac uses base 10. So you will get a larger number on your Mac but the amount of free storage is the same.

Also the Time Machine tab won't let you set a quota that is as large as all of the remaining space (it's not advisable to completely fill a volume).

[StephenB]

Try running a balance

[mdgm-ntgr]

What numbers do each report? And how much space is on the volume?

[martin9911]

A balance did not fix it...

[martin9911]

I´m doing a huge sorting of my data, all across my computers, external drives and the NAS. 

This problem came when i removed a private time machine and I´ll soon be doing it again. 

Can I fix this some way and how do I remove private time machine the right way so this does not happen again?

/Martin

[mdgm-ntgr]

You may wish to update to 6.5.2.

Can you also send in your logs (see the Sending Logs link in my sig)?

[martin9911]

Upgraded to 6.5.1, which is the latest available update for me.

I have found differences also within webgui.

Se attached files. 

Sending you logs soon. 

[martin9911]

Logs are sent! 😄 

[martin9911]

I´m about to remove another "private timemachine". This time not 300 Gb but 1,5TB. Last time removed it I got an the difference in available data at the size of the removed "private timemachine" 

I do want to fix that and I don´t want it to happen again.

So how is the best way to remove a "private timemachine"?

[mdgm-ntgr]

If you go to https://<nasname>/admin/browse.html#path=%2Fdata%2F.timemachine

where <nasname> is the hostname or I.P. of the NAS do you see the Time Machine data still there for the deleted user?

[martin9911]

No, removed time machine user does not show at all.

[mdgm-ntgr · Accepted solution]

The NAS uses base 2 (like most PCs) whereas the Mac uses base 10. So you will get a larger number on your Mac but the amount of free storage is the same.

Also the Time Machine tab won't let you set a quota that is as large as all of the remaining space (it's not advisable to completely fill a volume).

[martin9911]

So it's just a coincidence that the size of my deleted time machine matches with base 2 vs base 10?
Even though I never seen any difference in available space before?

[mdgm-ntgr]

Base 2 to Base 10 conversion would be e.g. 

1GiB (base 10) = 1024 ^ 3 / 1000 ^ 3 GB (base 2)

Disk manufacturers and Macs use base 10 whereas most PCs use base 2. PCs tend to call GiB, GB.

[martin9911]

That´s not the case for me. Using your formula and to my current numbers:

NAS Webgui 2,95TB equals 3,021TB. Finder shows 3,24TB. 

EDIT: I stand corrected! I was wrong, mdgm was right!