Each row of data in Tablestore occupies storage space. If max versions and time to live (TTL) are not configured for a table, each row of data includes only the column name and data value.
If max versions or TTL is configured for a table, data of each version includes the version number that occupies eight bytes, the column name, and the data value. Therefore, the size of the table increases.
For more information about max versions and TTL, see Data versions and TTL.