Computer system and a method for storage area allocation
First Claim
1. A storage device selecting method in a computer system comprising different kinds of plural storage devices, a computer connected with the plural storage devices and a management computer connected with the plural storage devices and said computer, said method comprising the steps of:
- transmitting a request to use a storage area owned by some of the plural storage devices to said management computer from said computer connected with the plural storage devices;
comparing information about the plural storage devices with the requirements included in the request from said computer connected with the plural storage devices, selecting a storage area which meets the requirements from the plural storage devices, and transmitting information about a storage device having the selected storage area, wherein these operations are implemented by said management computer; and
receiving the information about the storage device and controlling the storage device on the basis of the received information, wherein these operations are implemented by said computer connected to the plural storage devices.
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Abstract
It is an object of the present invention to allow storage devices to be used selectively according to the characteristics of each storage device in a computer system where different kinds of storage devices coexist.
Receiving a file system allocation request from the user or an application, a device allocation program on a host sends the request to the storage management server. The storage management server compares the storage configurations of the SAN and NAS systems with the presented requirements for the file system area, selects a storage area which best meets the requirements, reconfigure the storage and returns information about the position of the allocated area to the host. The host, if the allocated area is a file system area, returns the information about the position of the allocated area to the application. If the allocated area is a logical device of the SAN storage, the host makes the operating system recognize the logical device, creates a file system and returns the information about the position of the file system to the application.
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Citations
17 Claims
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1. A storage device selecting method in a computer system comprising different kinds of plural storage devices, a computer connected with the plural storage devices and a management computer connected with the plural storage devices and said computer, said method comprising the steps of:
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transmitting a request to use a storage area owned by some of the plural storage devices to said management computer from said computer connected with the plural storage devices;
comparing information about the plural storage devices with the requirements included in the request from said computer connected with the plural storage devices, selecting a storage area which meets the requirements from the plural storage devices, and transmitting information about a storage device having the selected storage area, wherein these operations are implemented by said management computer; and
receiving the information about the storage device and controlling the storage device on the basis of the received information, wherein these operations are implemented by said computer connected to the plural storage devices. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A management computer connected with a computer and plural storage devices, comprising;
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a control unit; and
an interface used to connect said computer and the plural storage devices;
wherein, the control unit, via the interface, receives a request from said computer to use a storage area owned by some of the plural storage devices;
compares the configurations of the plural storage devices with the storage area requirements included in the request and selects a storage area which meet the requirements; and
transmits information about the storage device containing the selected storage area to said computer via the interface. - View Dependent Claims (9, 10)
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11. A computer system comprising:
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a first computer;
a first storage subsystem connected with the first computer;
a file server connected with the first computer;
a second storage subsystem connected with the file server; and
a second computer connected with the first storage subsystem, the first computer and the file server;
wherein, the first computer sends a file area creation request to the second computer, and the second computer, in response to the file area creation request sent from the first computer, determines a storage device for file area creation in the first storage subsystem or the second storage subsystem. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification