Backing Up Shadow File Systems

Filesystems that are actively migrating shadow data can be backed using NDMP as with any other filesystem. The shadow setting is preserved with the backup stream, but will be restored only if a complete restore of the filesystem is done and the share doesn't already exist. Restoring individual files from such a backup stream or restoring into existing filesystems may result in inconsistent state or data corruption. During the full filesystem restore, the filesystem will be in an inconsistent state (beyond the normal inconsistency of a partial restore) and shadow migration will not be active. Only when the restore is completed is the shadow setting restored. If the shadow source is no longer present or has moved, the administrator can observe any errors and correct them as necessary.