New-Cluster tries to cluster wrong disks

Dell chassis with two blade servers and storage.

Three virtual disks on the chassis presented to both servers.

Each server has two disks on local storage, for local C and D drives.

Windows Server 2012 R2

I am trying to automate the configuration of the servers, including clustering them.

When I run Test-Cluster, the report shows it identified all of the drives on each node, and knows that only the three shared disks are to be validated for clustering.

When I run:

New-Cluster -Name Cluster1 -Node Server1, Server2, -StaticAddress 10.10.10.10

the three shared disks are correctly clustered.

But it is also doing something with the local D drives.  After the command runs, the disks containing the D drives are offline and readonly on both servers.  If I try to bring one of them online, I get:

set-disk : The specified object is managed by the Microsoft Failover Clustering component. The disk must be in cluster
maintenance mode and the cluster resource status must be online to perform this operation.

How do I get New-Cluster to ignore my local D: drives?

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Tim Curwick
MadWithPowerShell.com