A cluster consists of a number of hosts or nodes that share a set of disks. The main benefits of cluster configurations are:
The cluster functionality of Veritas Volume Manager (CVM) allows up to 16 nodes in a cluster to simultaneously access and manage a set of disks under VxVM control (VM disks). The same logical view of disk configuration and any changes to this is available on all the nodes. When the cluster functionality is enabled, all the nodes in the cluster can share VxVM objects. This chapter discusses the cluster functionality that is provided with VxVM.
Note You need an additional license to use this feature.
This chapter does not discuss Veritas Storage Foundation Cluster File System (SFCFS) nor cluster management software such as Veritas Cluster Server (VCS). Such products are separately licensed, and are not included with Veritas Volume Manager. See the documentation provided with those products for more information about them.
For information about administering campus cluster configurations (also known as stretch cluster or remote mirror configurations), see Administering sites and remote mirrors.