Installation guide

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346
VMware ESX Server Administration Guide
In order for the virtual machine to access a physical disk, the instructions in the Virtual
Disk Configuration section on page 339 should be replaced with the following steps:
To add a physical SCSI controller and shared raw SCSI disks, go to the Hardware tab
and take the following steps:
1. Click Add Device.
2. Click Hard disk.
3. Click System LUN/Disk to give your virtual machine direct access to a SAN or
shared storage volume.
4. Choose the LUN/Partition you want to attach to this VM as a raw disk.
Note: In ESX Server, physical disks are identified by a vmhba number. For
example, vmhba0:1:2:1 means physical adapter vmhba0, target 1, LUN 2,
partition 1. When the final number is :0, that indicates you are specifying the
entire disk, rather than a particular partition.
5. Choose the virtual SCSI node to which you want to attach the raw disk.
Note: Shared disks must be attached to a separate SCSI controller from the
system disk. Select, SCSI 1:1
6. Click OK.
A new virtual disk and SCSI Controller 1 appear on the Hardware tab.
7. Click Edit next to SCSI Controller 1 to change the bus sharing from none to
physical.
8. From the Bus Sharing drop-down list choose physical, then click OK.
Setting the bus sharing to physical makes sure that all the SCSI reserve and reset
commands go through to the physical disk.
Repeat step 1–step 8 to create an additional shared raw disk using SCSI 1:2.
You have completed the virtual machine configuration.
Installing Microsoft Cluster Service
Follow the procedure in Installing Microsoft Cluster Service on page 340.
Additional Notes for Clustering Across Physical Machines
• For maximum flexibility, put each shared virtual disk on a separate VMFS on a
separate SCSI disk (or LUN). The reason for this is that SCSI reservation can be
done only at the granularity of a complete SCSI disk or LUN. If two shared virtual
disks are on the same VMFS, reserving one disk will also reserve the other disk. If
you choose to put more than one shared disk on the same VMFS (as in the