text:  global-cluster non-voting nodes. made to global device permissions are not automatically propagated to all the nodes in the cluster for Solaris Volume Manager and disk devices. If you want to change permissions on global devices, you must manually change the permissions on all the nodes in the cluster. For example, if you want to change permissions on global device /dev/global/dsk/d3s0 to 644, you must issue the following command on all nodes in the cluster:
  # chmod 644 /dev/global/dsk/d3s0
  VxVM does not support the chmod command. To change global device permissions in VxVM, consult the VxVM administrator's guide.
  You
  For Sun Cluster software to maintain the VxVM namespace, you must register any VxVM disk group or volume changes as Sun Cluster device group configuration changes. Registering these changes ensures that the namespace on all cluster nodes is updated. Examples of configuration changes that impact the namespace include adding, removing, or renaming a volume. Changing the volume permissions, owner, or group ID also impacts the namespace.
  Never import or deport VxVM disk groups by using VxVM commands after the disk group has been registered with the cluster as a Sun Cluster device group. The Sun Cluster software handles all cases where disk groups need to be imported or be deported.
  Each VxVM disk group must have a cluster-wide unique minor number. By default, when a disk group is created, VxVM chooses a random number that is a multiple of 1000 as that disk group's base minor number. For most configurations with only a small number of disk groups, the minor number is sufficient to guarantee uniqueness. The minor number for a newly created disk group might conflict with the minor number of a device group.
  If you are setting up a mirrored volume, Dirty Region Logging (DRL) can be used to decrease volume recovery time after a node failure. Use of DRL is strongly recommended, although use of DRL could decrease I/O throughput.
  VxVM does not support the chmod command. To change global device permissions in VxVM, consult the VxVM administrator's guide.
  Sun Cluster 3).