My Cloud EX2 Ultra, with 2 USB devices connected. How does the NAS report/pass capacity and storage space info to a computer ?
in mac OS, the free space available on each device is:
NAS: 4.82 TB
USB1: 1.12 TB (formatted HFS+J)
USB2: 3.44 TB (formatted ext4)
in the NAS dashboard, the free space available on each device is:
NAS: 4.82 TB
USB1: 1.11 TB (formatted HFS+J)
USB2: 3.84 TB (formatted ext4)
USB1 and USB2 are each 8TB capacity.
USB1 appears as a USB device with 8TB capacity and 1.12TB free
USB2 appears as a USB device with 7.93TB capacity and 3.84TB free
mac OS finder reports the capacity and free space for the NAS and USB1 EXACTLY the same as what the NAS dashboard shows.
for USB2, finder is reporting capacity EXACTLY the same as what the NAS dashboard shows, but free space is mismatched (3.84 minus 3.44 = .4TB or 400GB).
this USB2 device is ext4 filesystem, the same as what the NAS uses internally for it’s drives. so why the difference in free space shown between mac Finder and the dashboard ? both USB devices have shares which are mounted in Finder with SMB.
400GB is quite a large difference and I am keeping an eye on it because if I underestimate how much free space i really have, I could end up overallocating and that will cause corruption on USB2.
