odysseus wrote:... Disk Utility shows "Format: Mac OS Extended (Journaled)", but when I let Time Machine create the file, it shows "Format: MacOS Extended (Case-sensitive, Journaled)" Is there a difference between the two files?
Yes, there is a difference between the filesystems. If it doesn't say case-sensitive then it's not. But then when the same tool reports two different values, one would understand there to be a difference... it certainly isn't going to report different values for the same filesystem at different times now is it?
odysseus wrote:It would really be nice to be able to specify the maximum size!
Read through the long TimeMachine thread. There are several examples therein of how to manually create a sparsebundle, including the options to set the maximum size. Heck, I think that even the notes posted in the ReadyNAS blog about this include the size specification in them.