Red Hat GLOBAL FILE SYSTEM 4.7, Manual

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Note
Clients implementing ext2 and ext3 file systems can be configured to access
their own dedicated slice of SAN storage.
Figure 1.2. GFS and GNBD with a SAN
1.3. Economy and Performance
Figure 1.3, “GFS and GNBD with Directly Connected Storage” shows how Linux client
applications can take advantage of an existing Ethernet topology to gain shared access to all
block storage devices. Client data files and file systems can be shared with GFS on each client.
Application failover can be fully automated with Red Hat Cluster Suite.
Economy and Performance
3