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Update oc-mirror-about-cache-and-workspace-dirs.adoc
It should be `mirror-to-disk` and `disk-to-mirror` Currently: disk-to-mirror and mirror-to-disk
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You can use the `--cache-dir` flag to specify a directory where the oc-mirror plugin stores a persistent cache of image blobs and manifests for use during mirroring operations.
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The oc-mirror plugin uses the cache in the `disk-to-mirror` and `mirror-to-disk` workflows but does not use the cache in the `mirror-to-mirror` workflow. The plugin uses the cache to perform incremental mirroring and avoids remirroring unchanged images, which saves time and reduces network bandwidth usage.
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The oc-mirror plugin uses the cache in the `mirror-to-disk` and `disk-to-mirror` workflows but does not use the cache in the `mirror-to-mirror` workflow. The plugin uses the cache to perform incremental mirroring and avoids remirroring unchanged images, which saves time and reduces network bandwidth usage.
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The cache directory only contains data up to the last successful mirroring operation. If you delete or corrupt the cache directory, the oc-mirror plugin pulls the image blobs and manifests again, which can force a full remirror and increase network usage.
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