If you change the system configuration of HiRDB, you may also have to change the configuration of paired logical volumes or paired logical volume group. The following table shows situations in which the configuration of paired logical volumes or paired logical volume group need to be changed.

Table 7-1 Situations requiring changes in the configuration of paired logical volumes or paired logical volume group

Changes to HiRDB system configuration	Change required to the configuration of paired logical volumes or paired logical volume group
Adding a unit Adding a server Moving a unit (adding a destination) Moving a server (adding a destination)	Add a paired logical volume group. For a detailed procedure, see 7.2 Adding a paired logical volume group.
Adding or extending RDAREAs Adding system files	Add a paired logical volume to an existing paired logical volume group. For a detailed procedure, see 7.3 Adding a paired logical volume to an existing paired logical volume group.
Changing a unit identifier Changing a server name	Change the name of a paired logical volume group. For a detailed procedure, see 7.4 Changing the name of a paired logical volume group.
Transferring tables when adding a server Migrating from HiRDB/Single Server to HiRDB/Parallel Server	Move a paired logical volume to a new paired logical volume group. For a detailed procedure, see 7.5 Moving a paired logical volume to a new paired logical volume group.
Transferring tables to another server	Move a paired logical volume to an existing paired logical volume group. For a detailed procedure, see 7.6 Moving a paired logical volume to an existing paired logical volume group.
Deleting a unit Deleting a server Moving a unit (deleting the source) Moving servers (deleting the source)	Delete a paired logical volume that is no longer needed. For a detailed procedure, see 7.7 Deleting a paired logical volume.