CONTROL APPARATUS AND CONTROL METHOD

• US 20080307073A1
• Filed: 06/03/2008
• Published: 12/11/2008
• Est. Priority Date: 06/06/2007
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Hachimura, Futoshi
• Granted Patent: US 7,818,438 B2
• Time in Patent Office: Days
• US Class Current: 709/219
• CPC Class Codes: H04L 67/025 for remote control or remote monitoring of applications
• CPC Class Codes: H04L 67/564 Enhancement of application control based on intercepted application data
• CPC Class Codes: H04L 67/5682 Policies or rules for updating, deleting or replacing the stored data

Abstract

In externally uploading data to a storage device in a network, the process for the storage device is controlled in accordance with the state in the network. This invention provides a control apparatus which controls a process for a storage device in externally uploading data to the storage device by communicating with the network to which the storage device and a remote access server are connected. The control apparatus receives an event transmitted from the storage device when it is accessed, calculates the process load of the storage device, and instructs the remote access server to limit the transfer amount of data to the storage device when the calculated process load is larger than a predetermined threshold value.

Claims

1. A control method of controlling a process for a storage device, comprising the steps of:

acquiring a process load of the storage device; and

limiting, in a device different from the storage device, a transfer amount of data to be transferred to the storage device via a remote access server in accordance with the process load acquired in the acquiring step.

2. The method according to claim 1, wherein acquisition of the process load of the storage device in the acquiring step and limitation in the limiting step are executed by a device in a network which includes the storage device and the remote access server.

3. The method according to claim 1, wherein acquisition of the process load of the storage device in the acquiring step and limitation in the limiting step are executed by the remote access server.

4. The method according to claim 1, further comprising the step of, when the process load acquired in the acquiring step exceeds a predetermined threshold value, instructing the remote access server to limit the transfer amount to the storage device.

5. The method according to claim 4, wherein upon receiving the instruction in the limitation instructing step, the remote access server temporarily stores the received data in a storage included in the remote access server, thereby limiting the transfer amount of the data to the storage device.

6. The method according to claim 4, wherein upon receiving the instruction in the limitation instructing step, the remote access server receives the data while performing flow control, thereby limiting the transfer amount of the data to the storage device.

7. The method according to claim 4, wherein upon receiving the instruction in the limitation instructing step, the remote access server stops transmission of the data to the remote access server, thereby limiting the transfer amount of the data to the storage device.

8. The method according to claim 7, further comprising the step of, when the process load of the storage device is smaller than the predetermined threshold value, instructing the remote access server to start transmitting the data to the remote access server.

9. The method according to claim 4, further comprising the step of determining a type of a device which accesses the storage device,

wherein in the limitation instructing step, the instruction is sent to the remote access server when it is determined in the determining step that the device is a device of a predetermined type.

10. The method according to claim 4, further comprising the step of determining a priority function of a process of a device which accesses the storage device,

wherein in the limitation instructing step, the instruction is sent to the remote access server when it is determined in the determining step that the process from the device corresponds to a predetermined priority function.

11. The method according to claim 2, further comprising the step of determining a remaining band in the network,

wherein in the limiting step, an upload limitation instruction is sent to the remote access server when it is determined in the determining step that the remaining band in the network is smaller than an upload band.

14. A computer-executable control program stored on a computer-readable medium for causing a computer to implement the control method set forth in claim 1.

12. A control apparatus for controlling a process for a storage device, comprising:

an acquisition unit configured to acquire a process load of the storage device; and

a limiting unit configured to limit a transfer amount of data to be transferred to the storage device via a remote access server in accordance with the process load acquired by said acquisition unit.

13. The apparatus according to claim 12, wherein the control apparatus is included in the remote access server.