SQL 2008 R2 Cluster | change Cluster Disks

Hello,

We have a SQL cluster (for SharePoint 2010) consists of two nodes Windows server 2008 R2 & SQL 2008 r2.

The SQL cluster have MSDTC (Clustered) & SQL services, with total four disks:

Quorum Disk

MSDTC Disk

Databases disk

Logs disk.

Now the old SAN will be decommissioned and new LUNs have added to replace the our disks above. I managed to change Quorum & MSDTC. I used the below robocopy command to copy databases and logs with the same folder structure and permissions:

robocopy t:\ l:\ /E /MIR /SEC /COPYALL /V

I stopped SQL services then swapped drive letters , when I start SQL services it starts without problems (using the new Disks).

But the issue is when I connect to SQL management studio, all databases are in suspect mode. I know there some SQL query to be run against each database , but this a production environment and I don't want to mess with it.

Is there any other way to change cluster disks of SQL cluster? or use the above method without getting into suspect mode?

Thanks, Shehatovich