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If metro node is implemented with PowerStore storage to provide highly available storage to Oracle, follow the best practices for the architecture and configuration of PowerStore storage for Oracle. See PowerStore: Oracle Database Best Practices for more information.
Recommendations for Oracle that are specific to metro node are covered in this document.
Moving Oracle databases between datacenters or migrating databases between homogenous or heterogenous arrays can be challenging and time consuming. Metro node provides the ability to perform these data movements consistently and risk-free based on need and without sustaining application outages or data loss. This is accomplished, in part, by virtualizing the volumes. With metro node virtual volumes, metro Local copies data from one storage volume to another non-disruptively without changing the virtual volume presented to the host. In Figure 10, metro node extent migration is used to move data between metro node devices in a metro node Local configuration.
There are several data mobility and migration use cases for metro node with Oracle in both a metro node Local and metro node Metro configuration.
With either a metro node Local or metro node Metro configuration, metro node can withstand failures of storage arrays and cluster components, as well as avoiding service disruptions during maintenance and hardware refreshes. Metro node Metro configurations can extend protection to other scenarios such as protecting from an entire site failure, or loss of communication between metro node clusters. Providing this increased resiliency keeps applications and data continuously online and available during service disrupting events.
Figure 7 depicts a highly available storage array solution in a metro node Local configuration that uses mirrored extents between supported arrays. Figure 8 shows a metro node Metro configuration that provides increased resiliency to a campus- or metro-placed data center within synchronous distances.