Hi Triet,  Welcome to the EMC Support Forums.  I suspect, you need to engage your local EMC Support team (Customer support engineer) for helping you out here. There is a certain procedure to follow to add the second CLARiiON storage and more importantly the EMC Install Base needs to be updated, if you add the second CLARiiON to the NS40G Gateway.  There is a script (/nas/sbin/add_clariion) which can be used to do this - the script can take care of the Zoning on the FC Switches and Creation of RAID Group and LUNs on the new CX4. However, the zoning and the CLARiiON Configuration can be done manually as well. Once the second CLARiiON is added - you can configure the new disks following the steps mentioned in the Celerra Tools section in the Powerlink - [URL]  I 'll personally prefer to engage EMC personnel - as this may lead to some unwanted issues with the CAM table or SCSI device list or the NASDB.  Thanks,Sandip
Hi,  How do I add a new storage array (CX4-480) to an existing NS40G which already has a CX as its main storage?  Thanks, -Triet
How to add a new storage array to NAS Gateway (NS40G)