I am backing up my hdd with the Time machine. Even small incremental backups take several hours. For an hour or so I am in the state "50.3 MB of 496.3MB", while in Activity Monitor I notice that mds_stores has accumulated already over 116 GB data read, and it increases by about 50 MB/s. My Hdd is this new pcie-sdd type, so it should be efficient with this sort of backup. Moreover in Console it is written that about 2300 files constitute this 0.5 GB of backup.
I am backing up to external usb Toshiba drive.
Am I missing something obvious? This is not normal, is it? Can I see which of these 2300 files the Time machine is currently backing up? The "preparing" phase was not so long - took about 30 minutes.