Managing Serviceguard 12th Edition, March 2006

Understanding Serviceguard Software Components
Volume Managers for Data Storage
Chapter 3116
NOTE LUN definition is normally done using utility programs provided by the
disk array manufacturer. Since arrays vary considerably, you should
refer to the documentation that accompanies your storage unit.
Figure 3-24 shows LUNs configured with multiple paths (links) to
provide redundant pathways to the data.
Figure 3-24 Multiple Paths to LUNs
Finally, the multiple paths are configured into volume groups as shown
in Figure 3-25.