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title: Enabling Mirroring in Greenplum Database 
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You can configure your Greenplum Database system with mirroring at setup time using `gpinitsystem` or enable mirroring later using `gpaddmirrors` and `gpinitstandby`. This topic assumes you are adding mirrors to an existing system that was initialized without mirrors.

-   **[Enabling Segment Mirroring](../../highavail/topics/g-enabling-segment-mirroring.html)**  

-   **[Enabling Coordinator Mirroring](../../highavail/topics/g-enabling-coordinator-mirroring.html)**  


**Parent topic:** [Enabling High Availability and Data Consistency Features](../../highavail/topics/g-enabling-high-availability-features.html)

