vboxmanage clonevdi "D:\VirtualBox\OEL61\oel61.vdi" "D:\VirtualBox\RAC1\rac1.vdi"
vboxmanage clonevdi "D:\VirtualBox\OEL62\oel62.vdi" "D:\VirtualBox\RAC1\rac2.vdi"
vboxmanage clonevdi "F:\VirtualBox\DB1\DB1.vdi" "F:\VirtualBox\DB2\DB2.vdi"
vboxmanage clonevdi "F:\VirtualBox\DB1\DB1.vdi" "F:\VirtualBox\DB\DB.vdi"