How to re-add the storage in RHEV-M

Hi ,

I am unign Startwind software iSCSI, i have allocated 2 LUN to RHEV-M and after that i was able to create the VMs in this storage.

now i have removed the storage from the RHEV-m because i was not able to active the storage after, but now i am not bale to add the same storage into the RHEV-M ans also how to remove old lun from this RHEV-M.

 pls check the below screen shot for more information