Hi Dekel,

We can use VCS inside virtual machines as you would do in physical servers,
to manage the applications. There is no limitations that I know of.

If you need to manage the virtual machines itself, then we can use VCS for ESX servers.

VCS provides a unique ability of failing over VM's if an application running inside VM fails.
Other HA solutions would just monitor the health of VM and fails over only when the VM
itself fails.

Regards
Srini

Thank you Srini,

I will be doing some tests in the lab and report back..

I am not sure if part of our solution also monitor the HW but I would guess so...Since we require it to provide HA for the whole cluster.
We have 3 agents that were developed to monitor specific aspects of the SW which according to you should not be a problem to use with VMs.

Thank you again for your reply.

Dekel

Hi, damrani,

there is a limitation for the cluster environment in virtual machines. You cannot use SCSI III Persistent Reservation for the fencing mechanism if you use VMware ESX 3.5 or earlier or if you do not have any direct mapped disks. Reason for this is that ESX 3.5 and earlier cannot handle SCSI III for physical disks, only vSphere can do this. And, for all versions of ESX and ESXi, the VMFS virtual disks cannot handle SCSI III. So, you cannot use fencing in those environments.

Best regards
Roger