Veritas Volume Manager 5.0.1 Administrator's Guide, HP-UX 11i v3, First Edition, November 2009

Creating a volume in a disk group sets up block and character (raw) device files
that can be used to access the volume:
block device file for volume vol in disk group
dg
/dev/vx/dsk/dg/vol
character device file for volume vol in disk
group dg
/dev/vx/rdsk/dg/vol
The pathnames include a directory named for the disk group. Use the appropriate
device node to create, mount and repair file systems, and to lay out databases that
require raw partitions.
VxVM’s view of multipathed devices
You can use the vxdiskadm command to control how a device is treated by the
Dynamic Multipathing (DMP) feature of VxVM.
See “Disabling multipathing and making devices invisible to VxVM” on page 147.
Cluster support
The Veritas Volume Manager software includes a licensable feature that enables
it to be used in a cluster environment. The cluster functionality in Veritas Volume
Manager allows multiple hosts to simultaneously access and manage a set of disks
under Veritas Volume Manager control. A cluster is a set of hosts sharing a set of
disks; each host is referred to as a node in the cluster.
See the Veritas Storage Foundation Getting Started Guide.
Configuring shared disk groups
If you are installing Veritas Volume Manager for the first time or adding disks to
an existing cluster, you need to configure new shared disks.
Note: RAID-5 volumes are not supported for sharing in a cluster.
If you are setting up Veritas Volume Manager for the first time, configure the
shared disks using the following steps in the specified order:
■ Start the cluster on one node only to prevent access by other nodes.
Configuring Veritas Volume Manager
VxVM’s view of multipathed devices
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