Some arrays provide a way to change the properties of LUNs. For example, the EMC symmetrix array allows write-protected (Read-only), and read-write enabled LUNs. Before changing the properties of a LUN, you must remove the device from Veritas Volume Manager (VxVM) control.
To change the properties of a LUN
# vxdg -g dgname rmdisk daname
In a cluster, perform this step from all of the nodes.
# vxdisk rm da-name
# vxdisk rm eva4k6k0_0
# vxdisk scandisks
# vxdg -g dgname adddisk daname