Patent ID: 8032606
Filing Date: 2011-10-04
Classification: G06F

Abstract:
1. A disk control unit comprising: a plurality of interfaces (I/Fs); a processor for controlling the plurality of I/Fs; and a main memory section, wherein the plurality of I/F exchange information with a plurality of Internet Small Computer System Interface (iSCSI) devices via a network connected between the iSCSI devices and the plurality of I/Fs, wherein each of the iSCSI devices manages a storage, wherein the main memory section stores registered information expressing an attribution of each of the iSCSI devices including capacity information indicating a capacity of the storage of each iSCSI device, access information indicating security and performance of each of the iSCSI devices through the network, and ranking information assigning a rank to each of the iSCSI devices based on the registered information and the access information, wherein the processor selects an appropriate iSCSI device according to various types of information including the ranking information stored in the main memory section, wherein said capacity information of the storage of each iSCSI device is collected during SCSI login processing to said iSCSI devices, and wherein said access information indicating security and performance of each of the iSCSI devices is collected at a timing of performing a test access to said iSCSI devices.