Method for forming virtual network storage

A method for forming a virtual network storage by uniting a plurality of network storages into one so that accesses to said plurality of network storages to be done just like accesses to one network storage, said method comprising the steps of:

• receiving a request from a client;
• transferring said received request to each of said plurality of network storages;
• receiving responses from said plurality of network storages in response to said transferred requests;
• determining whether or not each of said received responses is successful;
• combining only successful responses of said determined responses;
• and
• sending said combined response to said client.

A method for forming a virtual network storage by uniting a plurality of network storages into one so that accesses to said plurality of network storages to be done just like accesses to one network storage, said method comprising the steps of:

• receiving a request from a client;
• transferring said request to each of said plurality of network storages;
• receiving responses from said plurality of network storages in response to said transferred requests;
• determining whether or not each of said received responses is successful;
• and
• sending one successful response selected from among successful responses determined in said above step.

A method for forming a virtual network storage by uniting a plurality of network storages into one so that accesses to said plurality of network storages to be done just like accesses to one network storage, said method comprising the steps of:

• detecting an operation state of each of a plurality of network storages;
• generating an entry that includes error information for each detected error;
• receiving a request from a client;
• generating a response message in response to said access request by combining the entry information of a network storage operating normally among said plurality of network storages and the entry information that includes said generated error information;
• and
• sending said generated response message to said client.

A method for forming a virtual network storage by uniting a plurality of network storages into one so that accesses to said plurality of network storages to be done just like accesses to one network storage, said method comprising the steps of:

• generating a virtual entry that denotes specific one of said plurality of network storages included in said virtual network storage;
• determining whether or not a request from a client is addressed to said virtual entry;
• and
• transferring said request from said client to said specific network storage when said client request is addressed to said virtual entry.

A method for forming a virtual network storage by uniting a plurality of network storages into one so that accesses to said plurality of network storages to be done just like accesses to one network storage, said method comprising the steps of:

• registering the identifier of each of said plurality of network storages;
• registering information for accessing each of said plurality of network storages;
• and
• registering information for managing said plurality of network storages.