All of the blocks in a raw or block device are backed up during block-level backups. For supported file systems, only the blocks that contain data are backed up.
For more information about the high-level process steps for block-level backups on UNIX, see KB article DAPR0009.
Important Considerations
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When you select a native engine for snapshots, you cannot select a proxy for backup copy.
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If metadata collection was disabled during backup and you initiate a live browse, it will show all the files on the volume including the unchanged files. Filters are ignored.
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On AIX, only one CVBF snap can exist for a given device.
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To perform 1-Touch recovery from block-level backups, you must run block-level backup operations in a different MediaAgent (unlike the source computer).