Managing Serviceguard Nineteenth Edition, Reprinted June 2011

Figure 5 Mirrored Disks Connected for High Availability
Figure 6 below shows a similar cluster with a disk array connected to each node on two I/O
channels. See “About Multipathing” (page 32).
Figure 6 Cluster with High Availability Disk Array
Details on logical volume configuration for Serviceguard are in the chapter “Building an HA Cluster
Configuration.”
Sample Fibre Channel Disk Configuration
In Figure 7, the root disks are shown with simple mirroring, but the shared storage is now accessed
via redundant Fibre Channel switches attached to a disk array. The cabling is set up so that each
34 Understanding Serviceguard Hardware Configurations