Brocade Network Advisor SAN + IP User Manual v12.3.0 - Manual (Page 810)

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VCS
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VCS mode types
Beginning with Network OS 4.0, VCS mode encompasses two mode types:
• Fabric cluster mode (shown in Figure 285 )—The data path for nodes is distributed, but the
configuration path is not distributed. Each node maintains its configuration database
independently.
• Logical chassis cluster mode (shown in Figure 286 )—Both the data and configuration paths are
distributed. The entire cluster can be configured from the principal node. Logical chassis mode
requires Network OS 4.0 or later.
FIGURE 285 Fabric cluster mode
FIGURE 286 Logical chassis cluster mode
For more information about fabric cluster and logical chassis cluster modes, refer to the Network
OS Administrator’s Guide.
The term VCS mode refers to both fabric cluster mode and logical chassis cluster mode unless
otherwise indicated.