I've been playing around a bit with Windows 8's new File History feature. It's really disappointing that it can't be enabled for files outside of the specified locations, but I guess that can't be changed (right?)
However there are some things I could not figure out:
How can I specify a partition on the system drive to store history in?
I can set the size of the offline cache. But if I use an external drive, from what I understand the files will be backed up when I connect it, and when it's disconnected all file versions will be stored in a local cache somewhere (where?) on the system drive, waiting for the drive to be reconnected at which time an almighty flush will occur. So does the size limit for the offline cache affect the local cache as well?
Related to #2, what if I have a small system drive (say an SSD) but a comparatively huge external one, and the former does not have enough free space equal to the size of the offline cache specified on the latter? Does that mean if the external is not connected and the local cache is full, I will lose older file versions?
How can I add redundancy, i.e. specify multiple drives to save the same file history to? For example, specify an external drive as the primary location, and a second internal drive as the secondary one?
I see the three options below (frequency of saving, size of offline cache, retention period):
But what I'm really looking for is retaining only the last 'X' copies of each file. Is something like this possible?