To realize efficient processing regarding accesses to files. A remote controlling processing apparatus 14 of a file sharing system 10 is connected via a network 15 to a controlled processing apparatus 12 including a file storage part 17 in which a plurality of files 1, 2, 3 . . . are stored. Further, the remote controlling processing apparatus 14 includes: an access request generating part 19 generating access requests to the files 1, 2, 3 . . . in the file storage part 17; an access request storage part 22 in which the plural generated access requests are sequentially stored; and an access request notifying part 25 integrating plural ones of the access requests in the access request storage part 22 based on a storage status in the access request storage part 22 to notify the integrated access request to the controlled processing apparatus 12.