Hyper-V: Live Migration
On my Hyper-V 2012 R2 Standard Host I have two power supplies which are plugged into two different APC UPS's with the same specs.
Our 2nd Host configured the same way and is plugged into the same two UPS's,
Under what circumstances does a preconfigured, emergency, live migration make sence?
Our 2nd Host configured the same way and is plugged into the same two UPS's,
Under what circumstances does a preconfigured, emergency, live migration make sence?
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Your question seems to be centered around PSU's and available power. Obviously, in the event of a power outage, neither host will be available.
Depending on the role the VM(s) serve, you may be able to get away with a Quick Migration. I perform Quick Migrations and the VM is unavailable for less than a minute. Live Migrations take a considerably longer time.
Depending on the role the VM(s) serve, you may be able to get away with a Quick Migration. I perform Quick Migrations and the VM is unavailable for less than a minute. Live Migrations take a considerably longer time.
Two points to add here.
Livemigration can only happen if both source and destination are up and running. In the case of an emergency situation like a hardware failure or power failure - Live migration cannot happen.
If its a planned downtime, an administrator can move the running virtual machines from one server to another inorder to freeup a node for maintenance. However its not the case when you have unplanned host outages.
Livemigration can only happen if both source and destination are up and running. In the case of an emergency situation like a hardware failure or power failure - Live migration cannot happen.
If its a planned downtime, an administrator can move the running virtual machines from one server to another inorder to freeup a node for maintenance. However its not the case when you have unplanned host outages.
Live migration only useful for plan maintenance activity. When you want to restart or shutdown 1 host, you can perform live migration and transfer running VM to another Hyper-V host without downtime. If you need high availability, you can use Hyper-V clustering.
I'd say when a virtual server is consuming all resources on a fysical Hyper-V host. For as far as i can see there is not other point in doing this. Just my 2 cents btw.
Oh maybe, for testing to see if your setup actually works.