Patent ID: 7697312

Claim:
A storage system comprising: a disk for storing data; a first adapter directly connected to a first network connected to a first host computer; a second adapter directly connected to said disk; a second network directly connected to said first and second adapters for interconnecting said first and second adapters; and a third adapter connected to a second host computer via a third network, wherein: said second network interconnecting said disk and said first to third adapters; and the first protocol is a communication protocol for said first network and the second protocol is a communication protocol for said second and third networks, wherein said first adapter converts information in conformity with a first protocol received from the first host computer via said first network into information in conformity with a second protocol, and transferring the converted information to said second adapter via said second network, wherein said first adapter comprises: a file server unit for transmitting and receiving a command and data at a file level to and from said first host computer; and a channel adapter unit for transmitting and receiving a command and data at a block level to and from said second adapter, respectively mounted on a single board or in a single housing, wherein said file server unit comprises: a server processor for controlling said file server unit; a LAN controller for controlling the command and the data incoming from said first network; and a first internal bus for interconnecting said server processor and said LAN controller, wherein said file server unit executes a conversion process of the command and the data and sends the converted command and data to said channel adapter unit; and said channel adapter unit sends the command and the data subjected to the conversion process to said second network.