This may be a stupid question, but I'm trying to create multiple service areas for about 200 locations with multiple breaks based on driving time. I've created both my working database and network dataset on an external hard drive - F:. Even though I think I am writing everything to the F: drive, the Solve tools gobbles up tons of space on my C: drive. Does anyone know where it writes data to? I've checked the default.gdb database and other places where it may write data to and have made sure that everything is being written to my F: drive, but it I can't see to find where/why space is being used on the C:. Thank you very much for any input that you may have.