MD3000i - OS Rebuild on Modular Disk Storage Manager

We are running a PowerEdge 1950, Windows Server 2008, R2, Standard with the Dell Modular Disk Storage Manager for the MD3000i, Second Generation.  We also have two PowerEdge 2900 servers running as VMware ESX vSphere hosts to several VM servers.  The MD3000i is configured as the data stores for the VMs.

• This is a production system.
• The data is constantly being backed up, no advice needed regarding backups.
• I have documented as much information regarding the Network and this system configuration as I could possible find, any advice regarding the documentation of the system configuration is welcome.
• Dell support has expired - bummer...

We have been experiencing funny little bugs [Windows OS, go figure] on the PE1950 and would like to rebuild the OS on it.

Since this box is running the Dell MDSM on it, I have some concerns regarding pulling the trigger...  I see in the Device Manager on the PE1950 that these disks are populated.  I presume that the MDSM is putting them in there.

My concerns / questions:

1 - If I blow the OS on the PE1950 into oblivion and reinstall Windows Server 2008, R2, Standard back on it, will this have any effect on the storage array?

Note: I have powered this server down for three days without any trouble accessing the data on the MD3000i from the ESX hosts and the VMs.

2 - Will the reinstallation of the Dell MDSM on the new OS have any trouble regaining management of the MD3000i?

3 - What am I missing here that I have not already considered?

Please share your thoughts - ask me questions that you would like clarified - tell me your concerns, warnings or experiences regarding this process.

I realize I have left a lot of detail out of this post, but I just wanted to get the overall view of this situation - Long posts tend to go unread and unresolved.

TIA - Bluestar73