Patent ID: 8260986
Filing Date: 2012-09-04
Classification: G06F,H04L

Abstract:
1. A system comprising: a host computer; and a storage system including: a first and second physical port to receive I/O operations from said host computer; a first and second logical volume coupled to said first physical port; and a storage controller including a memory and a processor, wherein said host computer is able to access both said first and second physical port via a first virtual port, wherein in response to a write command to be written to said first logical volume from said host computer, said storage controller controls data to be transferred to said first logical volume via said first physical port which is identified based on a first virtual port identifier and a first volume number, and wherein in response to a write command to be written to said second logical volume from said host computer, said storage controller controls data to be transferred to said second logical volume via said second physical port which is identified based on a first virtual port identifier and a second volume number, wherein in response to a virtual port move command identifying a move from said first physical port to said second physical port designating said first plurality of logical volumes, said storage controller: assigns some of said first plurality of logical volumes coupled to said first physical port to said second physical port, acquires information of said first virtual port identifier, said first physical port identifier and said second physical port identifier associated with said first plurality of logical volumes, and updates information indicating a relationship between said first virtual port identifier and said first physical port identifier to information indicating a relationship between said first virtual port identifier and said second physical port identifier based on said information acquired by said storage controller.