You have a couple of options for installing the disks.
You can download the Navisphere Service Taskbar (NST) from PowerLink.
The path should be: Home > Support > Product and Diagnostic Tools > CLARiiON Tools > CLARiiON Installation Tools - Dell
The NST has a wizard for adding disks.
The other option, is to add the disks one at a time, waiting for each one to spin up and be recognized before inserting the next disk.
After the disks are added you will just need to connect Navisphere Manager (which runs on the storage system) connect to one of the management port's IP Address. Use Navisphere Manager to either expand existing RAID Groups and/or LUNS or create new ones.