Oracle-audio-technologies E10898-02 Manuel d'utilisateur télécharger pdf (Page 63)

High Availability (HA)

High Availability 9-3

Figure 9–2, "HA in effect for a Virtual Machine Server failure" shows a Virtual

Machine Server failing and the guests restarting on other Virtual Machine Servers in

the server pool.

Figure 9–2 HA in effect for a Virtual Machine Server failure

Figure 9–3, "HA in effect for a Virtual Machine Server restart or shut down" shows a

Virtual Machine Server restarting or shutting down and the guests migrating to other

Virtual Machine Servers in the server pool.

Figure 9–3 HA in effect for a Virtual Machine Server restart or shut down

To enable HA, you must first make sure all Virtual Machine Servers in the server pool:

■ Use the same shared storage.

■ Are in the same OCFS2 or NFS cluster.

■ Are Oracle VM Server Release 2.1.2 or above.

■ Have the same cluster root, which is a specially designated shared storage used for

heatbeating in the cluster. For example, the cluster root might be

example.com:/OVS for an NFS cluster, or /dev/sdd6 for an OCFS2 cluster. The

heartbeat file would be located at example.com:/OVS/.server_pool_hb for an NFS

cluster. There is no heartbeat file for an OCFS2 cluster as one is in-built in the file

system.

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Oracle-audio-technologies E10898-02 Manuel d'utilisateur Page 63