Data migration using dynamic synchronization

A system for virtual machine (“VM”) replication, comprising:

• a non-transitory, computer-readable medium containing instructions;
• and
• a processor that executes the instructions to perform stages comprising:
• identifying, on a network, a source node and a destination node, the source node including at least one source node VM to be replicated as a destination node VM on the destination node;
• performing a full synchronization by copying disks used by the source node VM in a current operational state to the destination node VM;
• scheduling start times for multiple update synchronizations of changed data between the source node VM and the destination node VM, the start times being scheduled at different time intervals, wherein a first time interval is greater than a second time interval;
• reducing respective durations of the different time intervals such that each successive different time interval is shorter than a preceding different time interval, the reductions being at a predetermined rate from a maximum duration to a minimum duration;
• and
• performing, at a switch-over time, a shutdown of the source node VM and transmitting data changes that are pending to the destination node.

A non-transitory, computer-readable medium containing instructions that, when executed by a processor, performs stages for virtual machine (“VM”) replication, the stages comprising:

• identifying, on a network, a source node and a destination node, the source node including at least one source node VM to be replicated as a destination node VM on the destination node;
• performing a full synchronization by copying disks used by the source node VM in a current operational state to the destination node VM;
• scheduling start times for multiple update synchronizations of changed data between the source node VM and the destination node VM, the start times being scheduled at different time intervals, wherein a first time interval is greater than a second time interval;
• reducing respective durations of the different time intervals such that each successive different time interval is shorter than a preceding different time interval, the reductions being at a predetermined rate from a maximum duration to a minimum duration;
• and
• performing, at a switch-over time, a shutdown of the source node VM and transmitting data changes that are pending to the destination node.