What is zoning?
Zoning is a fabric-based service on a Storage Area Network (SAN) that groups hosts and storage nodes that require communication. The basic requirement for zones to run is that the nodes can only communicate if they are members of the same zone. Nodes can also be members of multiple zones, which allows flexibility in using the method.

Zoning is concerned with the allocation of resources in a SAN to load balance the device connected to the network. This allows network administrators to divide a SAN into different units and allocate storage to the specified units as needed. It also protects the system from virus threats, malicious hackers, and data corruption because devices in the specified zones will not communicate through their ports outside the zone unless they are allowed to do so. When you divide a network into zones, processing activity is evenly distributed across the network so that each device is not overloaded. Load balancing is important in networks where it is difficult to predict the number of requests that can be made to the server.

In addition to preventing a host from gaining unauthorized access to storage assets, zoning prevents unwanted host-to-host communication and fabric-wide registered change notification disruption. Hosting is managed by a fabric name server and notifies end devices of events in fabrics, e.g. B. when a storage node or switch is switched offline.

There are three types of zones:

- Port zones
- Mixed zones
- Worldwide name zones

There are also two main types of zoning:

- Hard zoning
- Soft zoning
- Broadcast zoning (not generally available)

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