Setting up Microsoft Cluster

[max2479]

Hi All,

I followed this guide: http://pubs.vmware.com/vsphere-50/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-50-mscs-gu...

to setup clutser. Added my first Quorum disk as RDM (virtual), SCSI 1:0. When i add the same disk to my second node, i get this error message when powering on.

"An unexpected error was received from the ESX host while powering on VM vm-329.

Reason: Failed to lock the file.

Cannot open the disk '/vmfs/volumes/4fa9769c-f8aaa808-ee31-00221924bc69/db07/db07_10.vmdk' or one of the snapshot disks it depends on.

Any ideas?

[john23]

You need to change setting for scsi controller for vm

If you are setting across box MSCS ,then make scsi controller phyical in both the vm

if you are setting in box MSCS (both node in same host) ,then make scsi controller virtual in both the vm.

you need to power off the vm for doing this setting.

VM->edit setting-> scsi controller (of rdm)-> phyical /virtual

[Troy_Clavell]

are you clustering across ESX Hosts?  If so, you'll need the RDMs to be in physical compatibility modes

[max2479]

the first box was off. I have added RDM as virtual with SCSI 1:0

on the second server as powered off I Click Add, select Hard Disk, and click Next.

Select Use an existing virtual disk and click Next. By Editing both VMs it shows SCSI (1:0) and Virtual.

[max2479]

both VMs were on the same host. I will try as physical on different hosts.

[john23]

Are you using across box (Two esx servers ) for MSCS ,they you  need to use phyical compatiblity for scsi controller.

In both the vms you need to use virtual / phyical compatiblity according to you requirement.

[a_p_ · Accepted solution]

Don't mix up physical and virtual compatibility mode for the RDMs with "SCSI Bus Sharing" for the controller. In case of a single host, the "SCSI Bus Sharing" for the controller (not the disks) has to be set to virtual.

André

[john23]

correct as a.p. mentioned setting must be for scsi controller.

[max2479]

SCSI Bus Sharing was my problem. thank you

[IT_Vision]

Hi MAX2479,

I am attempting a similar setup using RDMs for MSCS across physical boxes.  I add the RDMs to the first VM on Host1, then when I go to add the RDM to the second VM on another host by choosing "Use an existing virtual disk" the same error comes up.  My shared storage is iSCSI SAN so I am not sure if this is supported with iSCSI SAN vs FC SAN.  Let me know what ended up working for you.

Cheers