Disk space occupied

UrBackup web admin logs indicate that the space on disk is 500gb, , but in the server disk the ocúpate space is 900gb.

Why Is it like this?

On which type of storage are stored your backups ?

In internal SATA III disk

Okay. Is it a Windows or Linux server ? Which filesysteme do you use ? NTFS ? EXT4 ? BTRFS ?

Regards,

It is Windows 2012 R2 Server, and the filesystem is NTFS

I think this is due to hardlinks, try to get disk usage with the “du” tool fromSysInternals :

See this post