HP Serveur lame HP ProLiant BL465c Gen8 - Manual (Page 165)

NOTE:
•
In a cluster configuration, dictionary map files updating must be performed on the active server.
You do not need to perform updating on both servers by switching the cluster.
• In a cluster configuration, before updating the dictionary map files, you need to assign the virtual
server name to the environment variable
DRM_HOSTNAME . If you update the dictionary map files
without specifying the virtual server name, the default dictionary map files will be updated instead
of the dictionary map files created in the shared directory.
• Usually, you do not need to update the dictionary map files on the backup server. However, if a
primary volume exists in the backup server, the dictionary map files must be updated.
Even after commencing operations, you need to update the dictionary map files when the operating
environment is updated. For details on the timing of updating the dictionary map, see “
Precautions
when updating dictionary map files ” on page 231.
Specifying how to mount a secondary volume
When backing up from a secondary volume to a tape, it is necessary to mount a secondary volume
on the backup server.
To mount a secondary volume, the following operations may be required:
• Create a copy group mount definition file
• Make the OS dynamically recognize the secondary volume
You must create a copy group mount definition file when the backup is of a dynamic disk and the
following operations are performed on the backup server:
• When VSS is used for the backup operation
• When mounting the secondary volume by specifying a copy group
You can create a copy group mount definition file even if the configuration is other than the above.
If a copy group mount definition file does not exist, Application Agent determines a mount point
automatically. Once you create a copy group mount definition file, you can perform the following
operations:
• You can mount the secondary volume to a specified mount point.
• If the same number of secondary volumes were provided as the number of multiple generations,
by defining a mount point for each generation, you can omit the mount point specification when
executing the command for mounting a secondary volume.
There are two methods to make the OS recognize the secondary volume: one is to make the OS
dynamically recognize the secondary volume, and another is to make the OS statically recognize the
secondary volume.
• Method to make the OS dynamically recognize the secondary volume:
Use the
drmdevctl command to conceal the secondary volume from the OS. This enables Ap-
plication Agent to mount and unmount the target secondary volume only when performing a backup
or restore. When using any of the following configurations, make sure that you use this method.
You can use this method in other cases as well.
• There are multiple generations of a secondary volume which is a dynamic disk.
• There are multiple generations of a secondary volume in a cluster configuration that uses Mi-
crosoft Cluster Service or Windows Server Failover Clustering.
• There are multiple generations of a secondary volume, and VSS is being used.
Application Agent CLI User Guide 165