Although no single procedure enables you to evaluate all problems with Solaris Volume Manager, the following process provides one general approach that might help.
Gather information about current the configuration.
Review the current status indicators, including the output from the metastat and metadb commands. This information should indicate which component is faulty.
Check the hardware for obvious points of failure:
Is everything connected properly?
Was there a recent electrical outage?
Have there been equipment changes or additions?