Patent ID: 7574529
Filing Date: 2009-08-11
Classification: H04L

Abstract:
1. A method executing in a processor for managing logical paths in a data storage system, comprising: providing up to 2 selecting up to 2 for each selected LSS, assigning an LSS number; storing in a configuration data structure in the control unit the assigned LSS number of each selected LSS with the corresponding assigned VLSS number; receiving in the control unit a request from an attached host device to establish a logical path between the host device and one or more of the selected LSSs; storing in a logical path data structure in the host adapter the VLSS number of each LSS for which a logical path is to be established; storing in the logical path data structure link addresses of the requesting host device and of the control unit; receiving in the control unit a command transmitted by the host device to perform an I/O operation with a first LSS identified in the command by its LSS number; and performing the I/O operation by the LSS having the VLSS number corresponding to the LSS number.