Patent ID: 6101497
Filing Date: 2000-08-08
Classification: G06F,Y10S

Abstract:
A method for controlling access to a data set by first and second applications wherein the data set is stored in a first data storage facility that is addressable by the first application, said method comprising the steps of:A) configuring a second data storage facility to correspond to the first data storage facility,B) establishing independently of operations in response to the first application and in response to a first command, a copy of the data set in the second data storage facility as a mirror for the first data storage facility by attaching the second data storage facility in parallel with the first data storage facility,C) in response to a second command:i) detaching the second data storage facility from the first data storage facility independently of operations in response to the first application thereby terminating the memory mirror function of the second data storage facility, andii) attaching the second storage facility to be addressed by the second application whereby the first and second applications thereafter can access the data sets in the first and second data storage facilities respectively and concurrently, andD) in response to a third command terminating the operations in response to the second command.