Help Center> Document Database Service> FAQs> Resource and Disk Management> Which Items Occupy the Storage Space of DDS Instances?
Updated on 2023-07-26 GMT+08:00

Which Items Occupy the Storage Space of DDS Instances?

The following types of data will occupy the storage space:

  • The storage space you applied for will contain the system overhead required for inode, reserved block, and database operation.
  • User data (backups not included)
  • Data required to ensure instances run properly, such as system database data, rollback logs, and search indexes.
  • Log output files that are generated by DDS ensure the stable operating of DDS instances. For example, oplogs occupy 10% of storage space and cannot be resized. The retention period of rotation oplogs depends on the oplog generation rate.

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