Managing Serviceguard 12th Edition, March 2006

Understanding Serviceguard Hardware Configurations
Redundant Disk Storage
Chapter 248
Figure 2-5 Mirrored Disks Connected for High Availability
Figure 2-6 below shows a similar cluster with a disk array connected to
each node on two I/O channels. This kind of configuration can use LVM’s
PV Links or other multipath software such as VERITAS Dynamic
Multipath (DMP) or EMC PowerPath