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Introduction to Oracle® Solaris Zones

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Updated: August 2019
 
 

When to Use Zones

Zones are ideal for environments that consolidate a number of applications on a single server. The cost and complexity of managing numerous physical machines make it advantageous to consolidate several applications on larger, more scalable systems.

The following figure shows zones that create separate execution environments for running an application in a production environment in a native zone and a kernel zone running a different SRU. Another native zone is used for developing the application. An additional kernel zone is used for testing. An additional zone maintains an environment to run legacy versions on Oracle Solaris 11. All zones run on the same server that is running an Oracle Solaris 11.4 global zone.

Figure 1  Zones Server Consolidation Example

image:Graphic shows that different versions of same application can run in different             zones on the same system.

Zones enable more efficient resource utilization on your system. Dynamic resource reallocation permits unused resources to be shifted to other zones as needed. Fault and security isolation mean that poorly behaved applications do not require a dedicated and underutilized system. With the use of zones, these applications can be consolidated with other applications.

Zones allow you to delegate some administrative functions while maintaining overall system security.