If you plan to version files from one or more encrypted source volumes, the archive volume must also be an encrypted volume. Otherwise, the data is stored nonencrypted on the archive volume.
For information about NSS Encrypted Volume Support, see Managing Encrypted NSS Volumes in the OES 11 SP3: NSS File System Administration Guide for Linux.
The data is not secure when transported between the source volume and the archive volume. For information, see Section 12.2, Secure Data Transfer.