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What is the difference between the space occupied and the space used by the cloud database MySQL?

Created on 2025-06-18 15:27:12
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The difference between the space occupied and the space used by a cloud database MySQL lies in their definitions and implications.

  1. Space Occupied: This refers to the total allocated storage space assigned to the MySQL database, regardless of whether it is actively used. It includes reserved capacity for data files, logs, backups, and potential future growth. For example, if you provision a 100GB MySQL instance, the space occupied is 100GB, even if only 20GB is actively storing data.

  2. Space Used: This indicates the actual amount of storage consumed by the database, including tables, indexes, logs, and other data structures. Using the same example, if only 20GB of the 100GB provisioned space is actively storing data, then the space used is 20GB.

Example:

  • A cloud MySQL instance is configured with 200GB of storage (space occupied).
  • After running for a month, the database stores 80GB of data, including tables and logs (space used).
  • The remaining 120GB is unused but reserved for future needs.

Tencent Cloud Recommendation:
For efficient storage management, Tencent Cloud MySQL offers auto-scaling and storage monitoring features. You can use TencentDB for MySQL to monitor space usage in real-time and adjust allocated storage dynamically to avoid over-provisioning. Additionally, Tencent Cloud Monitor provides alerts when space usage approaches the limit, helping optimize costs.