Server, backup system and backup method

摘要

A server includes: a first data storage device that stores therein data for use in service provided by the server; a backup data storage device that stores therein backup data for data stored in a second data storage device of another server; a service provision unit that provides the service by using the data stored in the first data storage device and by using the backup data stored in the backup data storage device; an update information creation unit that creates update information representing a content of the updating of the first data storage device; an update information transmission unit that transmits the created update information to the another server; and an update information reception unit that receives update information which is transmitted from the another server, and reflects the content of updating of the second data storage device on the backup data stored in the backup data storage device.

主权项

1. A server comprising:
a first data storage device that stores therein data for use in a service provided by the server; a backup data storage device that stores therein backup data for data stored in a second data storage device included in another server, wherein the data stored in the second data storage device is data for use in a second service provided by the another server; a service provision unit that provides the service provided by the server by using the data stored in the first data storage device, and in response to a request from a client terminal utilizing the service provided by the another server, provides the client terminal with the service provided by the another server by using the backup data stored in the backup data storage device; an update information creation unit that, when a content of the first data storage device is updated by the service provision unit, creates update information representing a content of the updating having been performed on the content of the first data storage device; an update information transmission unit that transmits the created update information to the another server; and an update information reception unit that receives update information which is transmitted from the another server and which represents a content of updating having been performed on a content of the second data storage device, and reflects the content of the updating having been performed on the content of the second data storage device on the backup data stored in the backup data storage device on the basis of the received update information; wherein, in a case of an e-mail service:
the first data storage device stores mail data therein;the backup data storage device stores therein backup data for mail data for use in an e-mail service provided by the another server; andthe service provision unit provides the e-mail service by using the data stored in the first data storage device, and, in response to a request from a client terminal utilizing the e-mail service provided by the another server, provides the client terminal with the e-mail service provided by the another server by using the backup data stored in the backup data storage device.