What is the main advantage of live migration in virtualization?

The main advantage of live migration in virtualization is minimized downtime. Live migration allows virtual machines to be moved from one physical host to another without interrupting the running services or applications. This uninterrupted operation is crucial for maintaining business continuity and ensuring that users have a seamless experience, especially in critical environments where availability is paramount.

By utilizing live migration, organizations can perform hardware maintenance, load balancing, or resource optimization while affecting users and processes as little as possible. This capability is particularly important for cloud services, enterprise applications, and any service where downtime could lead to significant losses or inconvenience.

The other options, while they may have some relevance to virtualization, do not capture the primary benefit of live migration as effectively. Enhanced graphics performance and lower energy consumption may be results of optimizing resources but are not direct outcomes of live migration itself. Increased storage capacity is not relevant to the process of migration, which primarily addresses the movement of running machines rather than the storage capability or performance.