Could I remove it online?

Hi, I have a similar problem. On my exchange server, I added a second raid array, (1TB) created a second DB on the new drive and moved a handful of my heaviest mail users to this new DB. After moving them, I noticed that the available disc space on the original disc dropped an amount equal to the size of the mail boxes moved. I would like to move the entire storage group to the new disc but, I am concerned about moving it after already creating the new DB on this drive. Will I have any issues?

Do you have to dismount the databases first before moving?

Yes , it is very easy in exchange 2007 as its database support portability feature.Just copy and paste the database with all logs But be assure database should be in clean state because after moving it from original location it would be converted in dirty state, so use eseutil parameter and make it clean shutdown and again attach it . I have done it in testing environment with 80 gb database. it is still working fine. Thanks Amit Rawat

Hi, I have similar situation, the difference is I am only changing storage on one sever; we are decommissioning one of the two SANs and I will need to move DB and storage group to another drive without impacting the other node of the CCR cluster. In my test environment, when I move to another drive, it impacts the other server... Thanks in advance.