Red Hat ENTERPRISE LINUX 4 - GLOBAL FILE SYTEM Manual page 16

Chapter 1. GFS Overview
Journals
Determine the number of journals for your GFS file systems. One journal is required for each node
that mounts a GFS file system. Make sure to account for additional journals needed for future
expansion.
GFS nodes
Determine which nodes in the Red Hat Cluster Suite will mount the GFS file systems.
GNBD server nodes
If you are using GNBD, determine how many GNBD server nodes are needed. Note the hostname
and IP address of each GNBD server node for setting up GNBD clients later. For information on
using GNBD with GFS, see the Using GNBD with Global File System document.
Storage devices and partitions
Determine the storage devices and partitions to be used for creating logical volumes (via CLVM) in
the file systems.
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