Patent ID: 6427213
Filing Date: 2002-07-30
Classification: G06F

Abstract:
A method for file synchronization for a fault tolerant network, the fault tolerant network including an active network entity and a standby network entity, the method comprising:(a) accessing a file within the active network entity; (b) generating a file access request within the active network entity and transmitting the file access request to the standby network entity, the file access request selected from a plurality of file access requests, the plurality of file access requests including a read request, a write request, an open request, and a close request; (c) performing the file access request by the standby network entity; (d) generating a file access confirmation by the standby network entity and transmitting the file access confirmation to the active network entity; (e) determining whether the file access request of the active network entity has a corresponding file access confirmation of the standby network entity; and (f) when the file access request of the active network entity has the corresponding file access confirmation of the standby network entity, deleting the file access request and the corresponding file access confirmation; and (g) when the file access request of the active network entity does not have the corresponding file access confirmation of the standby network entity, generating an error message and transferring the file access request to an error log of the active network entity.