Solaris Live Upgrade Requirements If Creating RAID-1 Volumes (Mirrors)

Solaris Live Upgrade uses Solaris Volume Manager technology to create a boot environment that can contain file systems that are RAID-1 volumes (mirrors). To use the mirroring capabilities of Solaris Live Upgrade, you must create at least one state database and at least three state database replicas. A state database stores information on disk about the state of your Solaris Volume Manager configuration. The state database is a collection of multiple, replicated database copies. Each copy is referred to as a state database replica. When a state database is copied, the replica protects against data loss from single points of failure. For procedures about creating a state database, see “State Database (Overview)” in Solaris Volume Manager Administration Guide.

Solaris Live Upgrade does not implement the full functionality of Solaris Volume Manager. Solaris Live Upgrade supports only a RAID-1 volume (mirror) with single-slice concatenations on the root (/) file system. A mirror can be comprised of a maximum of three concatenations. For guidelines on creating mirrored file systems, see Guidelines for Selecting Slices for Mirrored File Systems.