VCS- question

Hi admins, I have a question on shared diskgroup in vcs. Let's say i have two node cluster node A and B. I am having the failover service group (including the required resources such as disk grp, IP, mount..etc)
For an instance, the service grp is running on node A and suddenly if one of the shared disk gets failed, how can we have the service grp automatically switched to node B? I know we can do it manually, but I need it automatically.

Please suggest

VCS 5.1 and nodes with solaris 10.

---------- Post updated 08-31-12 at 06:36 PM ---------- Previous update was 08-30-12 at 07:06 PM ----------

solved using critical attr.

thanks.