What are two requirements for a fully functional vSphere HA cluster? (Choose two.)
A. vCenter installed or a vCenter Server Virtual Appliance (vCSA) deployed.
B. Access to local storage for each host in the cluster.
C. Static IP addresses entered in each hosts file in the cluster.
D. A minimum of one VMkernel port per host.
Correct Answer: AC
Explanation/Reference:
Explanation:
A: When you create a vSphere HA cluster, a single host is automatically elected as the master host. The master host communicates with vCenter Server and monitors the state of all protected virtual machines and of the slave hosts.
C: Requirements for a vSphere HA Cluster are:
All hosts must be licensed for vSphere HA.
At least two hosts in the cluster.
All hosts need to be configured with static IP addresses. If you are using DHCP, you must ensure that the address for each host persists across reboots.
There should be at least one management network in common among all hosts and best practice is to have at least two. Management networks differ depending on the version of host you are using.
ESX hosts – service console network.
ESXi hosts earlier than version 4.0 – VMkernel network.
ESXi hosts version 4.0 and later ESXi hosts – VMkernel network with the Management Network checkbox enabled.
To ensure that any virtual machine can run on any host in the cluster, all hosts should have access to the same virtual machine networks and datastores. Similarly, virtual machines must be located on shared, not local, storage otherwise they cannot be failed over in the case of a host failure.
For VM Monitoring to work, VMware tools must be installed. See VM and Application Monitoring.
Host certificate checking should be enabled. vSphere HA supports both IPv4 and IPv6. A cluster that mixes the use of both of these protocol versions, however, is more likely to result in a network partition.
Incorrect Answers:
B: Hosts in the cluster must be located on shared, not local, storage otherwise they cannot be failed over in the case of a host failure.
D: A VMkernel port is not a requirement for creating a vSphere HA cluster.
References:
http://pubs.vmware.com/vsphere-50/index.jsp#com.vmware.vsphere.avail.doc_50/GUID-33A65FF7-DA22-4DC5-8B18-5A7F97CCA536.html
http://pubs.vmware.com/vsphere-50/index.jsp?topic=%2Fcom.vmware.vsphere.avail.doc_50%2FGUID-BA85FEC4-A37C-45BA-938D-37B309010D93.html
http://www.lazywinadmin.com/2013/03/deploying-and-configuring-vcenter.html
Explanation/Reference:
Explanation:
A: When you create a vSphere HA cluster, a single host is automatically elected as the master host. The master host communicates with vCenter Server and monitors the state of all protected virtual machines and of the slave hosts.
C: Requirements for a vSphere HA Cluster are:
All hosts must be licensed for vSphere HA.
At least two hosts in the cluster.
All hosts need to be configured with static IP addresses. If you are using DHCP, you must ensure that the address for each host persists across reboots.
There should be at least one management network in common among all hosts and best practice is to have at least two. Management networks differ depending on the version of host you are using.
ESX hosts – service console network.
ESXi hosts earlier than version 4.0 – VMkernel network.
ESXi hosts version 4.0 and later ESXi hosts – VMkernel network with the Management Network checkbox enabled.
To ensure that any virtual machine can run on any host in the cluster, all hosts should have access to the same virtual machine networks and datastores. Similarly, virtual machines must be located on shared, not local, storage otherwise they cannot be failed over in the case of a host failure.
For VM Monitoring to work, VMware tools must be installed. See VM and Application Monitoring.
Host certificate checking should be enabled. vSphere HA supports both IPv4 and IPv6. A cluster that mixes the use of both of these protocol versions, however, is more likely to result in a network partition.
Incorrect Answers:
B: Hosts in the cluster must be located on shared, not local, storage otherwise they cannot be failed over in the case of a host failure.
D: A VMkernel port is not a requirement for creating a vSphere HA cluster.
References:
http://pubs.vmware.com/vsphere-50/index.jsp#com.vmware.vsphere.avail.doc_50/GUID-33A65FF7-DA22-4DC5-8B18-5A7F97CCA536.html
http://pubs.vmware.com/vsphere-50/index.jsp?topic=%2Fcom.vmware.vsphere.avail.doc_50%2FGUID-BA85FEC4-A37C-45BA-938D-37B309010D93.html
http://www.lazywinadmin.com/2013/03/deploying-and-configuring-vcenter.html