HP Hitachi Dynamic Link Manager Software Licenses User Manual
Page 336
Inheriting logical device names during storage system migration
This subsection describes inheritance of logical device names during storage
system migration. Note that if the volume manager is either SVM or VxVM,
logical device names cannot be inherited during storage system migration.
In the following two cases logical device names are inherited during storage
system migration:
•
When a file defining information for storage system migration is not used
If you do not use a storage-system-migration definition file, logical device
names can be inherited only when the host logical unit numbers of the
migration source are all unique and are the same as those of the
migration destination. If this condition is satisfied, logical device names
can be inherited during storage system migration by executing the
dlmsetconf utility and specifying the -t parameter.
•
When a file defining information for storage system migration is used
If you use a storage-system-migration definition file, there are no
requirements for inheriting logical device names. After you have created
the file, logical device names are inherited during storage system
migration by executing the dlmsetconf utility and specifying the -t
parameter.
To inherit logical device names during storage system migration:
1
.
Set up the migration-destination storage system, and then copy the
contents of the logical units in the source storage system to logical units
in the destination storage system.
If you intend to use a storage-system-migration definition file, you need
to create that file beforehand. For details, see
system-migration definition file on page 7-29
2
.
In the source storage system environment, execute the dlmsetconf
utility to update the configuration definition files.
3
.
To check that a storage-system-migration definition file is used, confirm
the following:
If you do not use a storage-system-migration definition file, do the
following:
Confirm that the storage-system-migration definition file (/opt/
DynamicLinkManager/config/dlmmiginfo.conf) does not exist.
If you use a storage-system-migration definition file, do the following:
Confirm that the storage-system-migration definition file (/opt/
DynamicLinkManager/config/dlmmiginfo.conf) has been created.
4
.
Clear the settings for the logical units in the source storage system. This
operation includes unmounting the logical units, removing the relevant
settings in the volume manager, and removing the disk settings for
applications such as DBMS.
5
.
In the source storage system, disconnect the logical units from hosts by
changing the configuration of storage system devices, Fibre Channel
4-68
HDLM Operation
Hitachi Dynamic Link Manager (for Solaris) User Guide