New array doesn't show up in Disk Admin

[Ayman Altounji]

I have 2 ProLiant 1850R's in a cluster with a fibre channel to an external array. I needed to add more disk space to the cluster so I added 3x36G drives to the external array. Using the Compaq Array Config Mgr. I create a new array RAID5 with the 3 drives and all looks good. When I go to Disk Admin on either node of the cluster, the new "Disk 3" shows up as "Off-line". How can I get this new array to show up on line so I can create a partion on it and then add it to my cluster?