FAILOVER METHOD, PROGRAM, FAILOVER APPARATUS AND FAILOVER SYSTEM
First Claim
1. A failover method in a failover apparatus provided in a system with servers capable of communicating with one another, for taking over processing to a spare server selected from other servers than a server executing the processing when a failure occurs in the server executing the processing, wherein:
- server priorities set based on operating statuses of the respective servers and devices capable of communicating with the respective servers in the system are stored in a storage portion of the failover apparatus so that the priorities are associated with the respective servers; and
a processing portion of the failover apparatus retrieves a server based on the priorities stored in the storage portion and designates the retrieved server as the spare server when the failure occurs.
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Accused Products
Abstract
The invention is to provide a failover method for improving overall reliability of a system including a large number of servers. Priorities set based on operating statuses of respective servers and shared devices capable of communicating with the respective servers in a failover system are stored in a storage portion while the priorities are associated with the respective servers, so that a failure processing portion of a management server retrieves a server based on the priorities and designates the retrieved server as a spare server when a failure occurs in one of the servers.
30 Citations
18 Claims
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1. A failover method in a failover apparatus provided in a system with servers capable of communicating with one another, for taking over processing to a spare server selected from other servers than a server executing the processing when a failure occurs in the server executing the processing, wherein:
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server priorities set based on operating statuses of the respective servers and devices capable of communicating with the respective servers in the system are stored in a storage portion of the failover apparatus so that the priorities are associated with the respective servers; and a processing portion of the failover apparatus retrieves a server based on the priorities stored in the storage portion and designates the retrieved server as the spare server when the failure occurs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A failover apparatus in a system with servers capable of communicating with one another, for taking over processing to a spare server selected from other servers than a server executing the processing when a failure occurs in the server executing the processing, the failover apparatus comprising:
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a storage portion in which server priorities set based on operating statuses of the respective servers and devices capable of communicating with the servers in the system are stored while the priorities are associated with the respective servers; a server retrieval portion which retrieves a server based on the priorities stored in the storage portion when the failure occurs; and a failover processing portion which designates the retrieved server as the spare server. - View Dependent Claims (15, 16, 17)
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18. A failover system comprising servers capable of communicating with one another, a failover apparatus which takes over processing to a spare server selected from other servers than a server executing the processing when a failure occurs in the server executing the processing, and devices capable of communicating with the respective servers, wherein:
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the failover apparatus includes a storage portion in which server priorities set based on operating statuses of the servers and the devices capable of communicating with the respective servers in the system are stored so that the priorities are associated with the respective servers; the failover apparatus retrieves a server based on the priorities stored in the storage portion when the failure occurs; and the failover apparatus designates the retrieved server as the spare server.
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Specification