Requirements for using Advanced Open File Option

The computer for which you want to use the Advanced Open File Option (AOFO) requires the following:

AOFO must be installed.
There must be enough free disk space on at least one volume to cache the data that changes during the backup job.

See Adjusting the Symantec Volume Snapshot Provider cache file size.
The file system must be NTFS, FAT32, or FAT. To use Microsoft Volume Shadow Copy Service (VSS), at least one NTFS partition is required.
To protect remote and local computers, the Backup Exec Remote Agent for Windows Systems must be installed. The Remote Agent is installed by default on the media server when Backup Exec is installed. When you install AOFO on remote computers, it automatically installs the Remote Agent.

Note:

AOFO cannot be used on CD-ROM, floppy diskettes, or removable media. Additionally, the Checkpoint Restart option is not supported by AOFO.

See Enabling or disabling checkpoint restart .

When backing up encrypted files with AOFO on Windows 2000 computers, a drive letter for the snapshot appears in Windows Explorer and on the Backup Exec Administration Console. Do not attempt to access or back up this drive letter. If no drive letters are available, encrypted files are backed up from the original volume, and the job is logged as Complete with Exceptions.