Patent ID: 7681082

Claim:
A system for reducing incidence of errors in a redundant path system during a process of attachment of an enclosure to a running subsystem, comprising: a control component for encapsulating said process of attachment of said enclosure to said running subsystem via a first loop comprising a first fibre channel arbitrated loop (FC-AL) cable connected between a first FC-AL interface connection of said enclosure and a first FC-AL interface connection of said subsystem and a second loop comprising a second FC-AL cable connected between a second FC-AL interface connection of said enclosure and a second FC-AL interface connection of said subsystem; a disabling component for disabling said first interface connection of said subsystem and said second interface connection of said subsystem as unused connections; a re-enabling component enabling said first interface connection of said subsystem; a testing component for testing for the presence of a usable data path across said first interface connection of said subsystem to said enclosure; said re-enabling component re-enabling said second interface connection of said subsystem; said testing component testing for the presence of a usable data path across said first interface connection and said second interface connection of said subsystem to said enclosure; and an enabling component enabling said first interface connection and said second interface connection of said subsystem to accept communication with said enclosure responsive to a positive outcome from said testing component, wherein said control component permits operation after attachment of said enclosure only if full redundancy is retained.