Patent ID: 8838768
Filing Date: 2014-09-16
Classification: G06F

Abstract:
1. A method for sharing a disk in a system including a plurality of physical servers and a management server connected to the physical servers, wherein a first physical server comprises a local disk, a first virtualization unit, and a first LPAR and a first storage controller LPAR logically partitioned by the first virtualization unit, wherein a second physical server comprises a second virtualization unit, a second LPAR and a second storage controller LPAR logically partitioned by the second virtualization unit, and a virtual disk generated by the second storage controller by emulating the local disk of the first physical server, wherein the first storage controller LPAR and the second storage controller LPAR communicate with each other, the method comprising: transferring, by the second storage controller LPAR, a disk I/O command to be executed to the virtual disk issued by the second storage controller LPAR to the first storage controller LPAR; and obtaining, by the first storage controller LPAR, an identifier of the local disk contained in the disk I/O command and executing the disk I/O command to the local disk having the identifier obtained.