anchor.diff:  
   #### <a id='resource-pools'></a> Resource Pools
   
  -To configure your resource pools according to the requirements of your deployment, see <%=vars.pools_link%>.
  -
  -Configure your <%=vars.pools_link%> according to the requirements of your deployment.
  +To configure your resource pools according to the requirements of your deployment, see <%=vars.pools_link%>
   
   Each IaaS has different ways of limiting resource consumption for scaling VMs. Consult with your IaaS administrator to ensure additional VMs and related resources, like IPs and storage, will be available when scaling.
   
  
positive.code: 
  ## <a id='capacity'></a> About High Availability
  
  This section describes configuring system components to ensure high availability. You accomplish this by scaling component VMs and locating them in multiple Availability Zones (AZs), so that their redundancy and distribution minimizes downtime during ongoing operation, product updates, and platform upgrades.
  
  Scaling component VMs means changing the number of VM instances dedicated to running a functional component of the system. Scaling usually means increasing this number, while scaling down or scaling back means decreasing it.
  
  Deploying or scaling applications to at least two instances per app also helps maintain high availability. For information about scaling applications and maintaining app uptime, see [Scaling an Application Using cf scale](../devguide/deploy-apps/cf-scale.html) and [Using Blue-Green Deployment to Reduce Downtime and Risk](../devguide/deploy-apps/blue-green.html).
  
  ### <a id='azs'></a> Availability Zones
  
  
negative.code: If you store blobs internally using WebDAV or NFS, these components run as single instances and you cannot scale them. For these deployments, use the high availability features of your IaaS to immediately recover your WebDAV or NFS server VM if it fails. <%= vars.contact_support %>
  
  <%= vars.collector_singleton %>
  
  
  ## <a id='scaling'></a> Component Scaling for High Availability
  
  ### <a id='vert-and-horiz'></a> Vertical and Horizontal Scaling
  
  