In most cases, the maximum size of a single table in an ApsaraDB RDS for MySQL instance is limited only by the largest file size that is allowed by the operating system. Therefore, the maximum size of a single table in an ApsaraDB RDS for MySQL instance is 16 TB. However, the actual maximum size is slightly less than 16 TB because a part of the table size is occupied by the table metadata.
If all tables in your ApsaraDB RDS for MySQL instance meet the preceding requirements but the performance of the instance still cannot meet your business requirements, contact Alibaba Cloud technical support.