If the domain to be migrated is running an Oracle Solaris OS version older than the Oracle Solaris 10 1/13 OS, you might see the following message during the migration:
Domain domain-name is not running an operating system that is compatible with the latest migration functionality.
The following CPU requirements and restrictions apply when you run an OS prior to the Oracle Solaris 10 1/13 OS:
Full cores must be allocated to the migrated domain. If the number of threads in the domain to be migrated is less than a full core, the extra threads are unavailable to any domain until after the migrated domain is rebooted.
After a migration, CPU dynamic reconfiguration (DR) is disabled for the migrated domain until it has been rebooted. At that time, you can use CPU DR on the migrated domain.
The target machine must have enough free full cores to provide the number of threads that are required for the migrated domain. After the migration, if a full core is only partially used by the migrated domain, any extra threads are unavailable to any domain until after the migrated domain is rebooted.
These restrictions also apply when you attempt to migrate a domain that is running in OpenBoot or in the kernel debugger. See Migrating a Domain From the OpenBoot PROM or a Domain That Is Running in the Kernel Debugger.