Differences between snapshots and Storage Checkpoints
While snapshots and Storage Checkpoints both create a point-in-time image of a file system and only the changed data blocks are updated, there are significant differences between the two technologies:
Differences between snapshots and Storage Checkpoints
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Snapshots
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Storage Checkpoints
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Require a separate device for storage
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Reside on the same device as the original file system
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Are read-only
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Can be read-only or read-write
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Are transient
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Are persistent
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Cease to exist after being unmounted
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Can exist and be mounted on their own
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Track changed blocks on the file system level
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Track changed blocks on each file in the file system
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Storage Checkpoints also serve as the enabling technology for two other Veritas features: Block-Level Incremental Backups and Storage Rollback, which are used extensively for backing up databases.
See Storage Checkpoints.
