Thanks for the suggestions, As I’m a newbie double-take sounds good but I have nothing to compare it with or on costs, this is for my home DC failover but I may be able to recommend the tested setup for work, so either I need to buy it for myself and recommend it or obtain a full trail to test with then recommend it. I just need to ensure that if the primary server fails then the secondary server kicks in as a mirrored setup/configuration as the primary server.
What is FT?
What is VMware HA with DRS
Sorry for the silly questions.
Hello Trevor (great name by the way),
We are all here to learn, man. So, ask away
FT is the Fault Tolerance tech mentioned by Dave.Mishchenko in a previous post. You have two ESX servers running copies of the same VM in lockstep. Only one instance of the VM is ever active at any time. As a change is made to the live VM, the hot copy is immediately updated.
That way, if the VM ever goes down, the hot copy takes over immediately with no data loss. Great tech, but it has a stringent set of requirements. It is also part of the more expensive licensing options. So, unless your environment requires absolutely 0 downtime, you may want to consider other options.
HA is High Availability and DRS is Dynamic Resource Scheduling. High Availability will automatically bring up VMs on another ESX\ESXi host in the event of a failure on the original physical host that the VM was running on. DRS will automatically shift VMs between physical hosts depending on policies that you set (ex: move VM from Server A to Server B if Server A resource usage is high).
All of these solutions require shared storage.
3rd party solutions provide varying levels of protection without requiring shared storage including
1. HA of the entire ESX host (DoubleTake)
2. HA of the individual VMs (CA, DoubleTake, etc.)
3. HA of vCenter itself (CA, DoubleTake, etc.)
Since you are just starting out with VMware, you will find a lot of answers to your questions (even the ones you haven't thought of yet
) on the VMware Communities Site (http://communities.vmware.com/home.jspa