Frequently asked questions about PolarDB-X nodes.
What is the maximum storage capacity for PolarDB-X 2.0 Standard Edition?
A single instance supports up to 3 TB of storage.
Is the node architecture in PolarDB-X 2.0 Standard Edition similar to the RDS primary/standby node architecture?
No. PolarDB-X 2.0 Standard Edition uses a three-node architecture consisting of one primary node, one standby node, and one log node. This design guarantees a Recovery Point Objective (RPO) of zero. RDS uses a primary/standby node architecture.
How do I balance the number of compute nodes and storage nodes?
PolarDB-X uses unified N-node sizing: a cluster with N nodes contains N compute nodes and N storage nodes. Configure the same number of compute nodes and storage nodes to maintain consistency across the cluster.
Can I modify the max_binlog_cache_size parameter?
Yes. Run the following command on a PolarDB-X 2.0 instance:
-- Replace <value> with the actual value.
SET GLOBAL max_binlog_cache_size=<value>;