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New Member

Virtual UC environment

How do you keep the Virtual UC Publisher and the Virtual UC Subscriber on different ESX hosts?

1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Virtual UC environment

Are you asking about the affinity rules on ESXi or exactly what do you want to know??

HTH

java

If this helps, please rate

www.cisco.com/go/pdihelpdesk

HTH

java

if this helps, please rate

www.cisco.com/go/pdi
4 REPLIES
Cisco Employee

Virtual UC environment

Are you asking about the affinity rules on ESXi or exactly what do you want to know??

HTH

java

If this helps, please rate

www.cisco.com/go/pdihelpdesk

HTH

java

if this helps, please rate

www.cisco.com/go/pdi
New Member

Virtual UC environment

You answered it. How does that work? 

A funny thing:  I thought my vmware guy said Infinity

I found the doc with the recommendations to avoid all actives on the same server, chassis or site

http://docwiki.cisco.com/wiki/Unified_Communications_Virtualization_Sizing_Guidelines

Redundancy and Failover Considerations

Application-layer considerations (such as Unified CM Cluster over WAN or Unified CCE Remote Redundancy) are the same for virtualized (UC on UCS) or non-virtualized (MCS 7800) deployments.

However, since there is no longer a 1:1 relationship between hardware and application instances, "placement logic" must be taken into account to minimize the impact of hardware unavailability or unreachability:

  • Avoid placing a primary VM and a backup VM on the same server, chassis or site
  • For failover groups, avoid placing all actives on the same server, chassis or site
  • Avoid placing all VMs of the same role on the same server, chassis or site
Cisco Employee

Virtual UC environment

The way this works is that you create the affinity rule to make sure the VMs are always together or you configure them in a way in which the VMs never are placed in the same HW.

You would use the alway together for example for a DB and a web server, the always on separate servers for a CUCM PUB/SUB.

You can read the VMWare explanation here:

http://pubs.vmware.com/vsphere-4-esx-vcenter/index.jsp?topic=/com.vmware.vsphere.resourcemanagement.doc_41/using_drs_clusters_to_manage_resources/c_using_vm_host_drs_rules.html

If the link breaks it should be under

vSphere 4.1 - ESX and vCenter > vSphere Resource Management Guide ->

Using DRS Clusters to Manage Resources

HTH

java

if this helps, please rate

www.cisco.com/go/pdihelpdesk

HTH

java

if this helps, please rate

www.cisco.com/go/pdi
New Member

Re: Virtual UC environment

You answered it. How does that work?

I found the doc with the recommendations to avoid all actives on the same server, chassis or site

Redundancy and Failover Considerations

Application-layer considerations (such as Unified CM Cluster over WAN or Unified CCE Remote Redundancy) are the same for virtualized (UC on UCS) or non-virtualized (MCS 7800) deployments.

However, since there is no longer a 1:1 relationship between hardware and application instances, "placement logic" must be taken into account to minimize the impact of hardware unavailability or unreachability:

  • Avoid placing a primary VM and a backup VM on the same server, chassis or site
  • For failover groups, avoid placing all actives on the same server, chassis or site
  • Avoid placing all VMs of the same role on the same server, chassis or site
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