Failure recovery method, failure recovery program and management server
AssigneeHitachi, Ltd.
InventorsShigeki Arata, Takashi Tameshige
Life of this patent
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Abstract
In a computer system, including server apparatuses such as an active server and a standby server connected to a storage apparatus, when the active server fails, a management server changes over connection to the storage apparatus from the active server to standby server to thereby hand over operation to the standby server. The management server refers to a fail-over strategy table in which apparatus information of the server apparatuses is associated with fail-over methods to select fail-over strategy in consideration of apparatus information of the active and standby servers.
Claims19
A failure recovery method in a management
- server to manage accesses of a plurality of server apparatuses and memory devices in a storage apparatus, wherein
- the plurality of server apparatuses include an active server and a standby server, and
- the method comprises the following steps performed by the management server:
- storing in a memory unit fail-over strategy information associating apparatus information related to the server apparatuses with fail-over methods defining how to change over from the server apparatus to another server apparatus in access of the memory device in the storage apparatus;
- getting from the memory unit first apparatus information which is the apparatus information for a failed active server previously stored in the memory unit;
- getting a first fail-over method which is at least one fail-over method for the failed active server from the fail-over strategy information in the memory unit on the basis of the gotten first apparatus information;
- getting from the memory unit second apparatus information which is the apparatus information for the standby server previously stored in the memory unit;
- getting a second fail-over method which is at least one fail-over method for the standby server from the fail-over strategy information in the memory unit on the basis of the gotten second apparatus information;
- getting a third fail-over method which is common to the fail-over method contained in the first fail-over method and the fail-over method contained in the second fail-over method;
- and
- changing over access of the storage apparatus from the failed active server to the standby server in accordance with the third fail-over method.
A management server to manage accesses of a plurality of server apparatuses and memory devices in a storage apparatus, wherein
- the plurality of server apparatuses include an active server and a standby server and
- the management server comprises;
- a memory unit in which fail-out strategy information associating apparatus information related to the server apparatuses with fail-over methods defining how to change over from the server apparatus to another server apparatus in access of the memory device in the storage apparatus;
- an apparatus information getting unit to get from the memory unit first apparatus information which is the apparatus information for a failed active server previously stored in the memory unit and second apparatus information which is the apparatus information for the standby server;
- a fail-over method selection method to get a first fail-over method which is at least one fail-over method for the failed active server from the fail-over strategy information in the memory unit on the basis of the gotten first apparatus information and a second fail-over method which is at least one fail-over method for the standby server from the fail-over strategy information in the memory unit on the basis of the gotten second apparatus information and to get a third fail-over method which is common to the fail-over method contained in the first fail-over method and the fail-over method contained in the second fail-over method;
- and
- a server changing-over unit to change over access of the storage apparatus from the failed active server to the standby server in accordance with the third fail-over method.
Dependencies are inferred from the claim text.