Patent ID: 6587935
Filing Date: 2003-07-01
Classification: G06F

Abstract:
A method for transferring data from a data storage facility through an intersystem transfer path to a second, geographically remote facility wherein said data storage facility includes a data store for storing data in a retrievable form and interface means responsive to externally generated write requests for transferring data to the data store and wherein, during a normal operating mode, the interface means responds to a write request by causing a first transfer of the data from the interface means to the data store and a second transfer to the remote facility and processes a subsequent write request only if a prior write request has been successfully processed by the remote facility, said method comprising the additional steps of:A) enabling an alternate operating mode and thereby disabling the normal operating mode, and B) thereafter responding to each write request received at the interface means by causing a transfer of the data from the interface means to the data store and by initiating a transfer of the data to the remote facility whereby the data storage facility continues to process subsequent write requests even without a completion of processing of prior write requests by the remote facility, and C) reverting the data storage facility to the normal operating mode when dynamic monitoring of data for which transfers have been initiated exceeds a maximum value.