Method of introducing a storage system, program, and management computer
OwnerToshiyuki Harumainventor
Life of this patent
Estimating the term…
Abstract
Access right is changed in a manner that allows a storage system (3) connected to a network access to an existing storage system (2). A path is detected for a volume set in the existing storage system (2), and when a volume is found that has no path defined, a path accessible to the new storage system is set to the existing storage system (2). A volume of the existing storage system (2) is allocated to the new storage system (3). A path is defined in a manner that allows a host computer access to the existing storage system (2). Data of the existing storage system (2) is duplicated to the volume allocated to the new storage system (3).
Claims13
A storage system introducing method for introducing a second storage system to a computer system comprised of a first storage system and a host computer, the first storage system being connected to a network, the host computer accessing the first storage system via the network, the method comprising:
- changing access right of the first storage system in a manner that allows the newly connected second storage system access to the first storage system;
- detecting a path for a volume set in the first storage system;
- setting, when a volume without the path is found, a path that is accessible from the second storage system to the first storage system;
- allocating a volume of the first storage system to the second storage system;
- defining a path in a manner that allows the host computer access to a volume of the second storage system;
- duplicating data stored in a volume of the first storage system to the volume allocated to the second storage system;
- and
- changing setting of the host computer to forward an input/output request made to the first storage system by the host computer to the second storage system.
A program for a computer system comprised of a first storage system, a host computer, and a management computer to make the management computer execute processing of introducing a second storage system to the computer system, the first storage system being connected to a network, the host computer accessing the first storage system via the network, the management computer managing the first storage system via the network, the second storage system being connected to the network,
- the program controlling the management computer to execute:
- processing of instructing the first storage system to change access right in a manner that allows the second storage system access to the first storage system;
- processing of detecting a path for a volume set in the first storage system;
- processing of setting, when a volume without the path is found, a path that is accessible from the second storage system to the first storage system;
- processing of instructing the second storage system to allocate a volume of the first storage system to the second storage system;
- processing of instructing the second storage system to define a path in a manner that allows the host computer access to a volume of the second storage system;
- processing of instructing the second storage system to duplicate data stored in a volume of the first storage system to the volume allocated to the second storage system;
- and
- processing of instructing the host computer to change setting to forward an input/output request made to the first storage system by the host computer to the second storage system.
A management computer for a computer system comprised of a first storage system, a host computer, and a second storage system to move data in the first storage system to the second storage system, the first storage system being connected to a network, the host computer accessing the first storage system via the network, the second storage system being newly connected to the network, the management computer comprising:
- a volume managing module which manages configuration information of volumes set in the first storage system and the second storage system;
- a path managing module which manages information on paths set in the first storage system and the second storage system;
- and
- a migration module which carries out migration from the first storage system to the second storage system when the second storage system is connected to the network,
- wherein the migration module comprises:
- a migration path setting module which uses the volume configuration information of the volume managing module and the path information of the path managing module to detect a volume that has no path defined out of volumes set in the first storage system and to set a path to this volume;
- an access right changing module which instructs the first storage system to change access right of the first storage system in a manner that allows the second storage system access to the first storage system;
- a volume allocating module which allocates a volume in the first storage system to the second storage system and updates the configuration information of the volume managing module;
- an introduction path setting module which sets a path to a volume in the second storage system in a manner that allows the host computer access to the volume in the second storage system and which updates the path information of the path managing module;
- a data migration module which instructs the second storage system to duplicate data stored in a volume of the first storage system to the volume allocated to the second storage system;
- and
- a migration finishing module which instructs the host computer to change setting to forward an input/output request made to the first storage system by the host computer to the second storage system.
Dependencies are inferred from the claim text.