Stateful File Service Slide 16 of 40 Stateful File Service Mechanism.
Client opens a file.
Server fetches information about the file from its disk, stores it in its memory, and gives the client a connection identifier unique to the client and the open file. Identifier is used for subsequent accesses until the session ends. Server must reclaim the main-memory space used by clients who are no longer active. Fewer disk accesses. Stateful server knows if a file was opened for sequential access and can thus read ahead the next blocks.