Patent ID: 8074032
Filing Date: 2011-12-06
Classification: G06F,Y02D

Abstract:
1. A storage control system comprising: a first storage controller being connected to a host system and having a channel adapter for providing one or more first logical volumes for being accessed by the host system, a first internal logical volume and a second internal logical volume, the second internal logical volume being associated by the first storage controller with one of said first logical volumes, the first and second internal logical volumes being configured to be used as storage areas for data transmitted to and received from the channel adapter, a plurality of disk drives being written with data with respect to the first internal logical volume as a group of data having a redundant relationship, and a disk adapter being connected to the plurality of disk drives and controlling the plurality of disk drives; and a second storage controller connected to the first storage controller and including third logical volumes, wherein the first storage controller is configured to associate the second internal logical volume to one of the third logical volumes in the second storage controller, wherein the first storage controller further includes a memory in which a table defining correspondence relationships between the second internal logical volume and the third logical volumes is stored, and the channel adapter is configured to access to the third logical volumes of the second storage controller based on the correspondence relationships of the table and to stop a power supply of a driving mechanism of a storage devices corresponding to the one of the third logical volumes which the first storage controller had associated with the second internal logical volume when the first storage controller switches the association between the one of said first logical volumes and the second internal logical volume, to an association between the one of said first logical volumes and the first internal logical volume.