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#11
Honestly its your choice.
You have plenty of free space on that drive. The backup just creates 2 folders like below and your backup is all kept in zip folders inside these.
So you could either just save it to that one large partition or shrink it down and create another purpose made backup partition.
The shrink will only shrink the size of the partition not the data but is dependant on where the files are located on the disk as to how far it will shrink.
So its whatever you feel more comfortable with.
Danny