HP StorageWorks Clustered File System 3.6.0 Windows Storage Server Edition Installation Guide (418975-003, January 2008)

Chapter 3: Install HP StorageWorks Clustered File System 23
If your disk array software provides the capability to create LUNs, we
recommend that you create three LUNs for the membership partitions.
Each LUN should contain a minimum of 1 GB.
After creating the LUNs, use the Windows Logical Disk Management
(WLDM) utility to create a single partition on each LUN.
NOTE: When using WLDM to manage your SAN disks, be sure to set the
disk type to “Basic.” If the disk type is currently set to “Dynamic,”
right-click on the disk and select “Convert to Basic disk.” HP
Clustered File System will not be able to access your SAN disks if
the disk type is set to “Dynamic.”
HP Clustered File System supports both MBR basic disks and GPT
basic disks. For MBR basic disks, you can use either primary
partitions or extended partitions with logical drives.
When you configure the cluster later in this procedure, you can create HP
Clustered File System membership partitions on the partitions that you
just created.
If you are unable to create LUNs on your disk array, you can place the
membership partitions on regular disk partitions. You can use the
Windows Logical Disk Management utility to create the appropriate
partitions.
Partitions Containing Windows Filesystems
If you will be using an existing partition for a membership partition and
that partition currently contains a Windows filesystem, then that
filesystem must be destroyed. One method for doing this is to delete the
partition and then recreate it. This is best done before multiple servers
have access to the disk. If that is not possible, all other servers with access
to the disk must be forced to recognize the changes, either by rebooting
all those systems, or by manually disabling the ports on the FibreChannel
switch that connect those systems to the SAN. If using the second
method, disable the ports before making the partition table change, and
then re-enable the ports afterwards.