Switching servers without interrupting a client command-response queue

摘要

The present invention provides computer implemented method, system, and computer program product of switching servers without interrupting a client command-response queue. In an embodiment, the present invention includes selecting standby computer server systems, connecting a CRQ of a client computer system to a previous active computer server system and to the selected standby computer server systems, transmitting setup commands to the selected standby computer server systems, communicating data with the previous active computer server system via at least one sub-CRQ, communicating management commands with the previous active computer server system and the selected standby computer server systems via the CRQ, receiving a notification that a switchover has occurred, redirecting the CRQ to one of the selected standby computer server systems, in response to the redirecting, communicating data with a new active computer server system via at least one sub-CRQ, and sending new setup commands to the new computer server system.