On my PC I have two 250GB hard drives, one of which I use for Backup storage. When I was last backing up I got a message that there was insufficient space. When I went to My Computer the total size of the drive was shown to be only 127GB. Can anyone explain please?
Can't fault the program ATI, 'tis the best for back-ups. However, you would be better to use the Differential back-ups instead of the Incremental back-ups.
Incremental back-ups create a daisy-chain of back-ups which, in the event of needing to make use of them to do a Restore, ALL the Incrementals plus the Full back-up will be needed to complete the Restore. If any one of the Incrementals become corrupt, the whole thing is kaput!
Where-as in the case of Differential backups, only the latest differential plus the Full backup are needed. This makes for a faster Restore and also uses far less room on your hard-drive.
I make Differential back-ups weekly and only keep the Full Back-up and the latest Differential, deleting earlier differentials.