I've done it before. The answer is yes. This is the easy part. The hard part is finding admins who are comfortable enough to add luns online. What platform are you on? Oracle version? What are you using for multipathing (assuming you are). Tom Sent from my Verizon Wireless BlackBerry -----Original Message----- From: Kumar Madduri <ksmadduri@xxxxxxxxx> Sender: oracle-l-bounce@xxxxxxxxxxxxx Date: Tue, 24 May 2011 15:50:57 To: oracle Freelists<Oracle-L@xxxxxxxxxxxxx> Reply-To: ksmadduri@xxxxxxxxx Subject: ASM for data migration Hi Can ASM be used to migrate data from one SAN array to another SAN array without any downtime and when users are online. Thank you Kumar