Disaster recovery

摘要

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.

主权项

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.