What is your default recording setting - Standard, Medium, or High?
Did you account for different show quality settings in you calculations?
If all the shows are not guaranteed (i.e. keep until I delete), the calculations can get really funky. If you have a number of shows that are "delete if space is needed", you may never get a handle on it.
I suggest you try DVArchive to see what it reports. At the same time, you can offload some of your shows to network based storage.
Did you account for different show quality settings in you calculations?
If all the shows are not guaranteed (i.e. keep until I delete), the calculations can get really funky. If you have a number of shows that are "delete if space is needed", you may never get a handle on it.
I suggest you try DVArchive to see what it reports. At the same time, you can offload some of your shows to network based storage.