Information processing system having volume guard function

A computer program product for guarding a logical volume of a system, wherein the system includes a first storage system providing plural first logical volumes including a real logical volume and a virtual logical volume with a host computer as access targets, a second storage system having at least one second logical volume, and a management computer coupled to the first storage system and the second storage system to manage the system, wherein

• the real logical volume is a first logical volume configured by at least one disk of the first storage system, the virtual logical volume is a first logical volume associated with the second logical volume, the second logical volume is configured by at least one disk of the second storage system, and when the first storage system receives an access request to the virtual logical volume, the first storage system is configured to access an associated second logical volume, the computer program product comprising:
• a recording medium;
• a code, recorded in the recording medium, that causes the management computer to receive a request to guard one of the plural first logical volumes;
• a code, recorded in the recording medium, that causes the management computer to refer information associated with a program for volume guard, which each of the first storage system and the second storage system has;
• a code, recorded in the recording medium, that causes the management computer to check whether the target first logical volume of the request is a real logical volume or a virtual logical volume;
• a code, recorded in the recording medium, that causes the management computer, in case that the target first logical volume is a virtual logical volume, to generate at least one option to satisfy the request by using at least one of programs for volume guard, which at least one of the first storage system or the second storage system has;
• and
• a code, recorded in the recording medium, that causes the management computer to display the at least one potion.

A method for guarding a logical volume of a system, which includes a first storage system, which provides plural first logical volumes including a real logical volume and a virtual logical volume with a host computer as access targets, a second storage system having at least one second logical volume, and a management computer coupled to the first storage system and the second storage system to manage the system, wherein

• the real logical volume is a first logical volume configured from at least one disk of the first storage system, the virtual logical volume is a first logical volume associated with the second logical volume, the second logical volume is configured from at least one disk of the second storage system, and when the first storage system receives an access request to the virtual logical volume, the first storage system is configured to access an associated second logical volume, the method comprising steps of:
• receiving a request to guard one of the plural first logical volumes at the management computer;
• referring information associated with a program for volume guard, which each of the first storage system and the second storage system has, at the management computer;
• checking whether the target first logical volume of the request is a real logical volume or a virtual logical volume, at the management computer;
• in case that the target first logical volume is a virtual logical volume, generating at least one option to satisfy the request by using at least one of programs for volume guard, which at least one of the first storage system or the second storage system has, at the management computer;
• and
• displaying the at least one potion.