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Use Solaris Live Upgrade to perform an operating system upgrade from one disk to another disk on a single node. When you use Solaris Live Upgrade, you can keep a node operational while you upgrade its operating system. You move VCS from one disk to another after you perform the Live Upgrade. When you use Solaris Live Upgrade to upgrade the OS, downtime for your node, and VCS, is the time it takes for a reboot.
When you use VCS in conjunction with Solaris Live Upgrade, you must pay attention to VCS kernel components such as VRTSllt, VRTSgab, and VRTSvxfen. These components are unique for each operating system version. Before you reboot the target disk, you must remove these packages and re-install them for the upgraded version of the operating system.