Encrypted Volume and File System v1.1 Administrator's Guide

Backing Up EVFS Volumes
This section contains procedures for backing up data on EVFS volumes. The backup procedures
differ depending on the following factors:
• Use of mirrored volumes or nonmirrored volumes. The mirrored volumes can be LVM or
VxVM.
NOTE: You cannot perform online encrypted backups to a tape or other non-EVFS device
unless you use mirrored volumes. If you do not have mirrored volumes, you can still perform
online encrypted backups, but you must use a second EVFS volume as the target device.
• The format of the backup media (encrypted or cleartext).
• The type of target backup device (non-EVFS device, such as a tape, or a second EVFS volume).
• The backup utility type (block device utility, such as dd, or file utility, such as tar or cp).
When using a block device utility, verify that the size of the EVFS volume is appropriate for
the backup media you are using and for the time it will take to back up a whole volume.
Table 7-1 lists backup types for installations using LVM or VxVM mirrored volumes. Table 7-2
lists backup types for installations not using mirrored volumes.
NOTE: The backup procedures in this section use the dd and cp utilities for basic operation
and clarity in the examples. Other procedures can be found in the Backing Up and Restoring Data
on HP-UX EVFS Volumes Using HP OpenView Storage Data Protector 6.0 white paper. For the latest
white papers and announcements about EVFS deployment tips and best practices, see the EVFS
product documentation set at http://www.docs.hp.com.
102 Backing Up and Restoring Data on EVFS Volumes