Information system and data access method

• US 7,107,291 B2
• Filed: 02/01/2005
• Issued: 09/12/2006
• Est. Priority Date: 03/12/2002
• Status: Expired due to Term

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Mizuno, Hirotaka, Namba, Yasuharu, Otani, Takanobu, Minami, Shoichi, Nishikawa, Norifumi
• Primary Examiner(s): Tan, Vibol
• Application Number:
  US11/049,570
• Publication Number:
  US 20050154770A1
• Time in Patent Office: 588 Days
• Field of Search: 707/2, 707 7- 10, 707/100, 707/102, 707/205, 707200-202
• US Class Current: 709/224
• CPC Class Codes: H04L 67/56 Provisioning of proxy services store-and-forward switching systems in data switching networks H04L12/54
• CPC Class Codes: H04L 67/564 Enhancement of application control based on intercepted application data
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: Y10S 707/959 Network
• CPC Class Codes: Y10S 707/99943 Generating database or data structure, e.g. via user interface
• CPC Class Codes: Y10S 707/99952 Coherency, e.g. same view to multiple users
• CPC Class Codes: Y10S 707/99953 Recoverability

Abstract

A data access method in an information system including a plurality of data utilization systems connected to a network N1, and a plurality of data provision systems connected to a network, wherein a data utilization system transmits a request for utilizing data in a data provision system to another data utilization system P2 through the network N1, the data utilization system, upon receipt of the data utilization request, transmits a processing execution request corresponding to the data utilization request to the data provision system through the network N2, the data provision system, upon receipt of the execution request, executes processing corresponding to this execution request and transmits necessary data to the data provision system through the network, and the data provision system receives the data and stores the same.

Claims

1. A data access method comprising the steps of:

transmitting a first request, from a first server device connected to a first network to a second server device connected to a second network, asking for usage of data which have been stored in a first storage device connected to the first network, the second server device and the first storage device being connected via the second network;

transmitting a second request, in response to a reception of the first request at the second server device, from the second server device to the first storage device, asking for data processing in accordance with the first request;

processing the data at the first storage device upon receipt of the second request; and

transmitting data processed at the first storage device to a second storage device after completion of processing data via the second network to reduce traffic in the first network, the data transmitted to the second storage device being used by the first server device.

2. A data access system comprising:

a first server device connected to a first network for transmitting a first request;

a second server device connected to a second network for receiving the first request transmitted from the first server device, and for transmitting a second request in response to the first request;

a first storage device connected to the first network, the second server device and the first storage device being connected via the second network for receiving the second request transmitted from the second server device, for processing data which have been stored therein according to the second request, and for transmitting the data processed; and

a second storage device for receiving the data transmitted from the first storage device via the second network to reduce traffic in the first network.

3. The data access system according to claim 2, wherein the first request is transmitted through a first network, and wherein the second request and the data processed at the first storage device are transmitted through a second network.

4. The data access system according to claim 2, wherein the second storage device comprises a plurality of storage units, each of the plurality of units sequentially receiving the data.

5. A data access system comprising:

a first server device for transmitting a first request;

a second server device for receiving the first request transmitted from the first server device, and for transmitting a second request in response to the first request;

a first storage device for receiving the second request transmitted from the second server device, for processing data which have been stored therein according to the second request, and for transmitting the data processed;

a second storage device for receiving the data transmitted from the first storage device; and

a third server device provided between the first server device and the second server device for provisionally receiving the first request directed to the second server device, for monitoring a load for processing data at the first storage device, and for transmitting the first request toward the second server device in accordance with the load monitored.

6. A data access system comprising:

a first server device for transmitting a first request through a first network;

a second server device for receiving the first request transmitted from the first server device, and for transmitting a second request in response to the first request through a second network to a first storage device at which data are processed according to the second request and the data processed thereat are transmitted through the second network;

a third server device provided between the first server device and the second server device for provisionally receiving the first request, for monitoring a load for processing data at the first storage device, and for transmitting the first request tentatively received thereat in accordance with the load monitored toward the second server device through the second network;

a second storage device including a plurality of storage units for receiving the data transmitted from the first storage unit.