HP StorageWorks P9000 Replication Manager Software 7.1 CLI User Guide (TB584-96026, May 2011)

uration for the logical volume manager and file system to the state that was in place at the time
the backup was created, and then perform restoration. Note that if you perform restoration incor-
rectly, a system inconsistency might occur. To review the configuration that was in place at the
time the backup was created, use the drmfscat, drmsqlcat, or drmexgcat command. For
details about how to use these commands, see the HP StorageWorks P9000 Replication Manager
Software CLI Reference Guide. For details about restoration when a physical volume is replaced,
see Appendix D on page 545.
Requirements and Precautions When a Disk Group Is Configured
When you operate Application Agent in a disk group configuration managed by Veritas Volume
Manager for Windows, the following prerequisites apply:
• The same OS, version revision, and service pack are installed on all the Windows servers subject
to backup and restoration by Application Agent.
• The physical disk subject to backup and restoration does not include a system (OS startup) disk.
• All the physical disks subject to backup and restoration are LUs of a storage system device and
for which a pair volume is defined.
• The dynamic volume is a concatenated volume (simple volume or spanned volume).
• HP recommends that one disk group consist of one concatenated volume.
• Striped volumes, mirrored volumes, and RAID5 volumes are not supported.
• You must dynamically recognize the secondary volume when backing up secondary volumes
(dynamic disk backup destinations) of multiple generations to tape.
Using dynamic disks in Veritas Volume Manager for Windows
Prerequisites for the Veritas Volume Manager for Windows environment and disk groups are as
follows:
• Veritas Volume Manager for Windows with the same version revision and service pack is installed
on all the Windows servers subject to backup and restoration by Application Agent.
• Do not back up and restore data with Veritas Volume Manager for Windows functions because
the disk group configurations managed by Application Agent might be changed.
• Disk group names must be unique in all the systems that back up and restore data. If multiple file
servers or database servers are sharing one backup server, the disk group names used by the file
server and database server may be duplicated in the backup server. If this occurs, Application
Agent is unable to uniquely recognize the disk groups in which data to be backed up to tape is
stored.
• Application Agent cannot back up and restore primary disk groups.
• Installing Veritas Volume Manager for Windows enables you to use Veritas Enterprise Administrator
instead of Windows disk management. Do not use Veritas Enterprise Administrator during execution
of Application Agent.
Backing up and restoring dynamic disks by recognizing the secondary volume dynamically
• When Application Agent dynamically recognizes the secondary volume, the Demount Device
Warning message is output to the event log.
Backing up and restoring dynamic disks by recognizing the secondary volume statically
• Do not rescan disk information with disk management, Veritas Enterprise Administrator, or the
diskpart or vxassist command. A Foreign disk, Failed volume, or Missing disk appears,
Application Agent system configurations80