Oracle RAC 备份和恢复Voting Disks 参考：
添加删除voting Disk示例：
环境：
[oracle@node2 ~]$ uname -a
Linux node2 2.6.18-164.el5 #1 SMP Tue Aug 18 15:51:54 EDT 2009 i686 i686 i386 GNU/Linux
SQL> select * from v$version;
BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE 10.2.0.1.0 Production
TNS for Linux: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
1.查看当前的Voting Disks和关闭Oracle Clusterware
注意：添加和删除Voting Disk应先关闭所有节点Oracle Clusterware。虽然加-force参数能在线操作，但有可能会损坏集群配置。
[oracle@node1 ~]$ crsctl query css votedisk
0. 0 /dev/raw/raw2
located 1 votedisk(s).
[root@node1 bin]# ./crsctl stop crs
Stopping resources.
Successfully stopped CRS resources
Stopping CSSD.
Shutting down CSS daemon.
Shutdown request successfully issued.
[root@node2 bin]# ./crsctl stop crs
Stopping resources.
Successfully stopped CRS resources
Stopping CSSD.
Shutting down CSS daemon.
Shutdown request successfully issued.
2.增加Voting Disk
[root@node1 bin]# ./crsctl add css votedisk /dev/raw/raw5 -force
Now formatting voting disk: /dev/raw/raw5
successful addition of votedisk /dev/raw/raw5.
如果不加-force则会出现如下情况：
[root@node1 bin]# ./crsctl add css votedisk /dev/raw/raw6
Cluster is not in a ready state for online disk addition