Fibre Channel zoning

In storage networking, Fibre Channel zoning is the partitioning of a Fibre Channel fabric into smaller subsets to restrict interference, add security, and to simplify management. While a SAN makes available several devices and/or ports to a single device, each system connected to the SAN should only be allowed access to a controlled subset of these devices/ports. Zoning applies only to the switched fabric topology (FC-SW), it does not exist in simpler Fibre Channel topologies.

Fibre Channel
Layer 4. Protocol mapping
LUN masking
Layer 3. Common services
Layer 2. Network
Fibre Channel fabric
Fibre Channel zoning
Registered state change notification
Layer 1. Data link
Fibre Channel 8b/10b encoding
Layer 0. Physical

Zoning is different from VSANs, in that each port can be a member of multiple zones, but only one VSAN. VSAN (similarly to VLAN) is in fact a separate network (separate sub-fabric), with its own fabric services (including its own separate zoning).

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