Restarting method using a snapshot
First Claim
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1. A snapshot-used restarting method for a computing system comprising:
- a plurality of active servers which are connected to a disk device including a plurality of disk drives;
at least one backup server connected to the disk device;
means for storing a snapshot containing memory content of said active server in said disk drives; and
disk management storage means for associating and saving a disk drive of a server acquired, said disk drives in which said snapshot is stored and information indicating timing of acquisition, said restarting methods comprising the steps of;
when a failure occurs either in said active servers, extracting a plurality of disk drives in which a snapshot of the server wherein said failure occurred from the disk drive in which said failure occurred and said disk management storage means;
choosing a disk drive associated with predetermined timing among said extracted disk drives from said disk management storage means; and
establishing connection with said backup server to start up the server.
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Abstract
The active server A101 notifies its own operating status to the administration server 106, and the administration server 106 acquires a snapshot and copies a disk according to the policy established by a user. When the active server A101 or the active disk 113 fails, the administration server 106 chooses a backup server A104 and a status storage disk A114 to be booted and restarts them by using the snapshot according to the policy.
96 Citations
18 Claims
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1. A snapshot-used restarting method for a computing system comprising:
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a plurality of active servers which are connected to a disk device including a plurality of disk drives; at least one backup server connected to the disk device; means for storing a snapshot containing memory content of said active server in said disk drives; and disk management storage means for associating and saving a disk drive of a server acquired, said disk drives in which said snapshot is stored and information indicating timing of acquisition, said restarting methods comprising the steps of; when a failure occurs either in said active servers, extracting a plurality of disk drives in which a snapshot of the server wherein said failure occurred from the disk drive in which said failure occurred and said disk management storage means; choosing a disk drive associated with predetermined timing among said extracted disk drives from said disk management storage means; and establishing connection with said backup server to start up the server. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A computing system comprising:
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a plurality of active servers which are connected to a disk device including a plurality of disk drives; at least one backup server connected to the disk device; means for storing a snapshot containing memory content of said active server in said disk drives; and disk management storage means for associating and saving a disk drive of a server acquired, said disk drives in which said snapshot is stored and information indicating timing of acquisition; wherein, when a failure occurs either in said active servers, a plurality of disk drives in which a snapshot of the server wherein said failure occurred are extracted from the disk drive in which said failure occurred and said disk management storage means; a disk drive associated with predetermined timing among said extracted disk drives is chosen from said disk management storage means; and said chosen disk drive is connected to said backup server for start up. - View Dependent Claims (15, 16, 17, 18)
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Specification