Use the following steps to achieve the IP address change:     Caution!  Be aware that this procedure will reboot each storage processor twice. Make sure that every host has at least one functional path to each storage processor and appropriate multi-pathing software or settings to support path failover or HA.  Alternatively, you can achieve the change by changing proxy ARP settings manually. The advantage is that the SPs are only rebooted once. 
Hi,  I need to change the ip address of CS and both DM as my network is migrating. Please help me with any type of doc and info about changing the ip ..  Thanks
Changing IP of CS and DMs