Be sure to read bug description ID 4121281 before you start upgrading your x86 system to the Solaris 7 operating environment.
The DiskSuite metadb replicas contain driver names as part of the DiskSuite configuration data. In x86-based systems that run versions 2.4, 2.5, 2.5.1, and 2.6 of the Solaris operating environment, the SCSI driver name is called cmdk. The cmdk driver has been replaced by the sd driver in the Solaris 7 operating environment for x86 systems.
Workaround: To avoid potential data loss during upgrades to the Solaris 7 operating environment, you must save the system's metadevice configurations in text files and remove their metadb replicas before upgrading any x86 system that is running DiskSuite. After you finish upgrading your x86 system, you must restore the metadevice configurations by using the DiskSuite command line interface.
The DiskSuite Version 4.2 Release Notes contain a procedure for saving metadb configurations, removing metadb replicas, upgrading x86 systems to the Solaris 7 operating environment, upgrading DiskSuite to version 4.2, and restoring metadevice configurations. Bourne shell scripts that automate the procedure will be available for the FCS version of the Solaris 7 operating environment.