In an MSCS cluster, storage disks are shared between nodes. You set up a quorum disk and an optional shared storage disk.
Prerequisites
Before you add hard disks to the first node, complete the following tasks:
- For each virtual machine, configure the guest operating system’s private and public IP addresses.
- Ask your SAN administrator for the location of unformatted SAN LUNs. The hard disks you create in this task must point to SAN LUNs.
- If you are using VVol storage for shared disk, please see Add Hard Disks to the First Node for Clusters Across Physical Hosts with VVol.
Note: Use RDMs in physical compatibility mode.
Procedure
- In the vSphere Client, select the newly created virtual machine, right-click and select Edit Settings.
- Click the New device drop-down menu, select RDM Disk, and click Add.
- Select an unformatted LUN.
- Select a datastore.
This datastore must be on a SAN because you need a single shared RDM file for each shared LUN on the SAN.
- Select Physical as the compatibility mode.
- Select a new virtual device node (for example, select SCSI (1:0)), and click Next.
Note: This must be a new SCSI controller. You cannot use SCSI 0.
- Click OK to complete creating the disk.
The wizard creates a new hard disk.
- In the New Virtual Machine - Edit Settings dialog box, expand SCSI controller and select the Change Type drop-down menu.
- Select the appropriate type of controller, depending on your operating system.
Operating System |
Type of Controller |
Windows Server 2003 SP1 and SP2 |
LSI Logic Parallel |
Windows Server 2008 SP2 and above |
LSI Logic SAS and VMware Paravirtual |
- Click OK.
- In the New Virtual Machine - Edit Settings dialog box, expand SCSI controller and select the SCSI Bus Sharing drop-down menu. Set SCSI Bus Sharing to Physical and click OK.
Results
The virtual machine is connected to a public network and a private network with two virtual switches, and is connected to the quorum disk on FC SAN and the virtual machine virtual disk on local or remote storage.