HP Serviceguard Extended Distance Cluster for Linux A.01.00 Deployment Guide, Second Edition, May 2008

Disaster Tolerance and Recovery in a Serviceguard Cluster
Understanding Types of Disaster Tolerant Clusters
Chapter 124
Figure 1-5 shows a CLX for a Linux Serviceguard cluster architecture.
Figure 1-5 CLX for Linux Serviceguard Cluster
A key difference between extended distance clusters and CLX clusters is
the data replication technology used. The extended distance cluster uses
Fibre Channel and Linux MD software mirroring for data replication.
CLX clusters provide extremely robust hardware-based data replication
available with specific disk arrays based on the capabilities of the HP
StorageWorks Disk Array XP series, or the HP StorageWorks EVA disk
arrays.