What is the difference between HA and DRS in VMware?
VMware HA and DRS are each able to provide availability for VMs. The main difference between the two technologies is that VMware designed DRS to work in clustered environments, while HA enables admins to protect their VMs without having to deal with the cost or complexity of a failover cluster.
What is HA DRS FT VMware?
Using vSphere HA with Distributed Resource Scheduler (DRS) combines automatic failover with load balancing. This combination can result in a more balanced cluster after vSphere HA has moved virtual machines to different hosts. You must manually migrate the virtual machines off of the hosts using vMotion.
How Master Will election in Ha?
vSphere HA clusters uses an election process to determine which host is to be the master. This election process occurs any time the existing master fails, is shut down, or is placed into maintenance mode. It also occurs when vSphere HA is enabled, or when a management network partition occurs.
Does HA require vMotion?
VMware HA and vMotion are two interwoven processes; VMware HA is dependent on vMotion. The technology of the migration process is designed so that there is no downtime and the user does not even notice these actions.
Is HA part of DR?
HA is often a major component of DR, which can also consist of an entirely separate physical infrastructure site with a 1:1 replacement for every critical infrastructure component, or at least as many as required to restore the most essential business functions.
What is the difference between HA and FT?
Within VMware, FT ensures availability by keeping VM copies on a separate host machine. With only HA configured, the hypervisor attempts to restart the VM on the same host cluster. With FT, the VM workload is moved to a separate host.
Does Ha require vMotion?
Does Ha work without vCenter?
HA is dependent on vCenter Server to monitor protected virtual machines. So if vCenter is down then currently protected virtual machines will be restarted on other ESXi hosts but you will not be able to protect any new virtual machines until vCenter is available.
How does VMware HA differ from vMotion?
If an accident occurs with any host within the same cluster, then your best solution is VMware HA. vMotion technology promotes migration from one host to another, and it doesn’t matter which OS each host has. VMware HA and vMotion are two interwoven processes; VMware HA is dependent on vMotion.
