OCFS2 is a cluster file system for Linux, which allows multiple nodes (Oracle VM Servers) to access the same disk at the same time. This shared access feature is crucial in the implementation of high availability (HA) for virtual machines running on the Oracle VM Servers that belong to a server pool with clustering enabled. Oracle VM works in concert with Oracle OCFS2 to provide shared access to server pool resources residing in an OCFS2 file system.

Further, since the load-balancing algorithm assures that a virtual machine is placed on the Oracle VM Server with the most resources available, it also helps assure the maximum aggregate performance from the server pool. Since the virtual machines are not bound to any specific Oracle VM Server in the server pool,virtual machines are not prevented from starting up simply because an individual Oracle VM Server happens to be down for maintenance or otherwise unavailable at the time. Virtual machines are stored on the shared storage and placed on one of the Oracle VM Servers to balance the workloads of the server pool. Oracle VM's deployment architecture utilizes server pools, with shared access to storage across Oracle VM Servers in the server pool. See Section 7.7.1, 'Adding an Oracle VM Server to a Server Pool'. If you find a server pool does not have sufficient resources, such as CPU or memory, to run the virtual machines, you can expand the server pool by adding more Oracle VM Servers. A server pool consists of one or more Oracle VM Servers, and represents a logical view of the storage where the virtual machines reside.Ī server pool is scalable.

Folder lock 7.7.4 key