Redrock Postgres Documentation
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Can I expand my storage online?


When a running PostgreSQL server instance is about to run out of allocated storage space, we may face the following difficulties:

  • Due to the limitation of hardware capabilities, the server cannot dynamically add new storage devices and expand available storage space;
  • Because the migration operation of stored data is complex, excessive downtime is not allowed for upgrading local storage devices;

In this case, is there a viable way to quickly expand available storage space while the server instance continues running?


Redrock Postgres supports network attached tablespaces. Based on this capability, you can deploy a standalone storage server, create a network attached tablespace, transfer some table data into this new tablespace. Finally, you have expanded storage capacity online.