Red Hat CLUSTER SUITE FOR ENTERPRISE LINUX 5.2, Overview

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• Section 5.1, “Superior Performance and Scalability”
• Section 5.2, “Performance, Scalability, Moderate Price”
• Section 5.3, “Economy and Performance”
Note
The GFS deployment examples reflect basic configurations; your needs might
require a combination of configurations shown in the examples.
5.1. Superior Performance and Scalability
You can obtain the highest shared-file performance when applications access storage directly.
The GFS SAN configuration in Figure 1.11, “GFS with a SAN” provides superior file
performance for shared files and file systems. Linux applications run directly on cluster nodes
using GFS. Without file protocols or storage servers to slow data access, performance is similar
to individual Linux servers with directly connected storage; yet, each GFS application node has
Figure 1.11. GFS with a SAN
5.2. Performance, Scalability, Moderate Price
Multiple Linux client applications on a LAN can share the same SAN-based data as shown in
Chapter 1. Red Hat Cluster Suite Overview
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equal access to all data files. GFS supports up to 16 GFS nodes.