I am (finally) jumping on the bandwagon and planning to get an Airport Extreme and 1 TB drive in order to automatically backup the two laptops in my household. Combined, the laptops have a total hard drive capacity of 450 gigs with probably 150 gigs of data between the two. I would like to use the remainder of the space on the drive for other general, network accessible storage (media and the like). Is this possible, or is a drive used for time machine strictly devoted to that purpose? Thanks!