Disaster recovery
First Claim
Patent Images
1. A file system disaster recovery method, comprising:
- receiving an indication that at least one of one or more primary targets in a logical namespace has failed;
selecting, in accordance with a specified priority scheme, one of at least two secondary targets associated with the failed primary target, the at least two secondary targets being designated as alternate targets to the failed primary target; and
swapping the selected secondary target for the failed primary target.
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Accused Products
Abstract
File system disaster recovery techniques provide automated monitoring, failure detection and multi-step failover from a primary designated target to one of a designated group of secondary designated targets. Secondary designated targets may be prioritized so that failover occurs in a prescribed sequence. Replication of information between the primary designated target and the secondary designated targets allows failover in a manner that maximizes continuity of operation. In addition, user-specified actions may be initiated on failure detection and/or on failover operations and/or on failback operations.
39 Citations
24 Claims
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1. A file system disaster recovery method, comprising:
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receiving an indication that at least one of one or more primary targets in a logical namespace has failed; selecting, in accordance with a specified priority scheme, one of at least two secondary targets associated with the failed primary target, the at least two secondary targets being designated as alternate targets to the failed primary target; and swapping the selected secondary target for the failed primary target. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A non-transitory computer-readable storage medium comprising software that can be executed on a processor to cause the processor to:
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receive an indication that at least one of one or more primary targets in a logical namespace has failed; select, in accordance with a specified priority scheme, one of at least two secondary targets associated with the failed primary target, the at least two secondary targets being designated as alternate targets to the failed primary target; and swap the selected secondary target for the failed primary target. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A file system disaster recovery system, comprising:
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one or more primary targets in a logical namespace, each primary target having at least two secondary targets associated therewith and designated as alternate targets to the primary target; and a processor; wherein the processor comprises a DR module for receiving notification that a primary target has failed, for selecting in accordance with a specified priority scheme one of the secondary targets associated with the failed primary target, and for substituting the selected secondary target for the failed primary target. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification