Although mac file recovery and MAC Data File recovery can be considered in the event of Time Machine backup failing error is encountered. The error is also accompanied by inability to access the previously created backup data and the related backup tool.
The Time Machine error 109; is reported, when the tool gets corrupted. There can be some more reasons for the error getting reported like:
i. Presence of incapability between Time Machine and setup created for backup tool.
ii. Possibly the backup has been created using the network present.
iii. Involvement of Airport Extreme base station with the hard drive.
iv. Not properly installed time machine.
All of the above conditions impose restriction on backup tool for creation of the backup and the result is inaccessibility encountered.
There is no reason for getting panicked, in case one is not able to do the restoration of backup function.
The resolution of the problem can be taken care by following the under mentioned corrective steps:
Time Machine is not supporting Airport Extreme base station, which can be replaced with Time Capsule.
Cause modification or do alteration in respect of network interface before connecting to the Time Machine.
Attempt renaming of MAC system, Time Machine Drive and Time capsule and replace with their respective short names.
Do reinstallation of Time Capsule firmware.