About the Index Backup Feature
The backup feature ensures that the necessary conditions are met to backup and restore a Coveo index:
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Cyclical Redundancy Check (CRC) error-detection is used to validate the backup integrity.
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The index is automatically switched in read-only mode during the backup operation and switched back to the read-write mode after the backup is completed, if it was in this mode when the backup operation was launched.
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System schedules are not allowed to switch the index to the read-write mode during a backup operation.
Notes:
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You can also back up only your configuration files (see Backing Up and Restoring the CES Configuration Files).
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CES 7.0.7022+ (September 2014) You can back up and restore:
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An index containing more than one slice (see About Index Slices).
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An index for which Near Real-Time indexing is enabled (see About Near Real-Time Indexing).
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An index for which the configuration file is not saved at the same location as the index files.
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When you run CES in a virtual environment, you can also consider creating snapshots of the virtual machine (VM) on which CES runs to back up the index and the complete CES installation. Before creating a VM snapshot, you must however ensure that the index is switched to the read-only mode (see Toggling the Index Between the Read-Write and Read-Only Modes).
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CES 7.0.6767– (June 2014) The creation of a Coveo index backup involves more steps (see Manually Backing Up and Restoring the Index).