adding new disk to cluster

Dear all ,
I am new to sun cluster and i having a problem adding a disk to a disk group .

My platfrom consists of a clustered E6900 SUN server and an EMC DX1000 storage .
the disk group that iam trying to add the disk to is shared group ,
whwen i run vxdisk list i get in status "online invalid" while it should be online shared .

please note that theese are the steps that i followed in addink the disk :

1) fromat disk
2) label
3) vxdctl enable
4) vxdg -g <group name> adddisk diskname=target

i am getting the following error in step 4 .

VxVM vxdg ERROR V-5-1-10127 associating disk-media newdisk with EMC0_56: Disk private region contents are invalid

thank you in advance

you have to initialize the disk before adding it to a disk group....

/etc/vx/bin/vxdisksetup [-ie] disk_device_address [ attribute... ]

see "man vxdisksetup", configure a disk for use with VERITAS Volume Manager

regards pressy

If you are new to this using vxdiskadm may help you to get things up and running if you are in a hurry, and you can figure out the command line syntax later.