new disks do not appear in disk list during W2K3 Cluster physical disk resource creation.

[Chris Young_6]

My configuration:
Two DL585 G2 with Dual Core 2.81 GHz 8220 SE Opterons.
W2K3 EE x86, SP2, 32 GB RAM. OS has updated Storport 5.2.3790.4021.
SA P400 supporting mirror SAS for boot, 2.10 Firmware, driver is 6.8.0.32.
Emulex LP952 HBAs, FW boot 1.70a3, 3.93a0, driver 5-1.20a7.

I have recently experienced the following problem.

While adding new SAN volumes to a W2K3 cluster, the disks will appear in Disk Mangement on the first host they are presented to.

I write a disk signature, and then use diskpart to create a 64-bit sector aligned NTFS partition, and assign the drive letter.
I then finish volume prep by formating and assigning a volume label.

All is normal until I attempt to create a new cluster physical disk resource. At this point, no disk is shown in the available disks.

I've checked the registry as follows:
After presenting the new LUN and assigning LUN ID at the first host, I run rescan on the host.

The new disk now appears in
HKLM\system\CCSet\Services\Disk\Enum as the next sequentially numbered key.

I use Disk Management to write a disk signature (initializing as MBR).

It is only after I use diskpart (or Disk Managment) format and configure the disk that the new disk it appears in
HKLM\SYSTEM\CCSet\Services\ClusDisk\Parameters\AvailableDisks.

Now when I use cluster admin to create a new cluster physical disk resource, the new disk does not appear in the disk selection list.

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The MS KB 929275 comes very close to my issue, except the new disk does not appear in HKLM\SYSTEM\CCSet\Services\ClusDisk\Parameters\Signatures.
Nor am I trying to create the disk from the node that does not own the quorum resource.

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I am only able to create the disk resource by issuing the following cluster.exe commands.

(e.g. disk signature 0x7ce115ec and assigned letter K:)

cluster . res "Disk K:" /create /group:"Disk Test Group" /type:"physical disk" [this creates the physical disk resource]

cluster . res "Disk K:" /priv signature=0x7ce115ec

At this point the volume definition migrates from HKLM\....\AvailableDisks to \Signatures and the Disk K: cluster resource is fully defined, and only needs to be brought on-line.

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Any ideas?