About the backup and restore of compressed files on VxFS file systems

NetBackup can back up and restore VxFS-compressed files, maintaining the compression state when the target volume supports file system compression.

Upon backup of files on a VxFS file system, a message displays in the Activity monitor whenever NetBackup encounters a compressed file:

Compress flag found for 'file_name'.

Upon restore, NetBackup restores the files to a VxFS file system in their compressed form.

If the restore is to a non-VxFS file system, NetBackup restores the files in an uncompressed form. The following message displays in the Details tab for the job:

File 'file_name' will not be restored in compressed form.

The message appears only for the first file that cannot be restored in its compressed form.