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MySQL 8.0 Reference Manual  /  ...  /  NDB Cluster Disk Data Tables

22.5.13 NDB Cluster Disk Data Tables

NDB Cluster supports storing nonindexed columns of NDB tables on disk, rather than in RAM. Column data and logging metadata are kept in data files and undo log files, conceptualized as tablespaces and log file groups, as described in the next section—see Section 22.5.13.1, “NDB Cluster Disk Data Objects”.

NDB Cluster Disk Data performance can be influenced by a number of configuration parameters. For information about these parameters and their effects, see Disk Data Configuration Parameters, and Disk Data and GCP Stop errors.

The performance of an NDB Cluster that uses Disk Data storage can also be greatly improved by separating data node file systems from undo log files and tablespace data files, which can be done using symbolic links. For more information, see Section 22.5.13.2, “Using Symbolic Links with Disk Data Objects”.


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