What methods ensure data consistency between hypervisors in a virtualized infrastructure?

Data consistency between hypervisors in a virtualized infrastructure is ensured by the following methods:

• Shared Storage: hypervisors use shared access to data storage (e.g., SAN or NAS), allowing them to work with the same data.

• Locking and coordination mechanisms: distributed locking protocols (e.g., through distributed file systems or coordination services like ZooKeeper) are used to avoid conflicts during simultaneous access.

• Data replication and synchronization: data between hypervisors is synchronized using replication, ensuring relevance and integrity.

• Use of distributed file systems: systems like Ceph or GlusterFS provide consistent data access with fault tolerance support.

• Virtual networks and state exchange protocols: hypervisors can exchange information about the state of virtual machines and resources through special protocols, ensuring consistency.

These methods collectively help maintain data integrity and relevance in a distributed virtualized environment.