HA Error: Datastore Heartbeat is less than 2

May 8, 2014 Storage vSphere HA
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If you are configuring a cluster with less than 2 datastores, you will receive an HA warning “The number of heartbeat datastores for host is 1, which is less than required: 2” You can add an option to the HA Advanced Options to supress this warning.

  1. Log in to vCenter Server
  2. Right-click the cluster and click Edit Settings
  3. Click vSphere HA > Advanced Options
  4. Under Option, add an entry for das.ignoreInsufficientHbDatastore
  5. Under Value, type true
  6. Click Cluster Features
  7. De-select Turn on vSphere HA and click OK
  8. Wait for all the hosts in the cluster to re-configure HA, then right-click the cluster and click Edit Settings
  9. Click Cluster Features
  10. Click Turn on vSphere HA
  11. Click OK
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