# Application Scenarios

**RSSD Cloud Disks are suitable for:**

  - High-performance databases.
  - Elastic Search searches and other low-latency I/O intensive applications.

**SSD Cloud Disks are suitable for:**

  - I/O intensive applications.
  - Medium and large relational databases.
  - NoSQL databases.

**Regular Cloud Disks are suitable for:**

  - Backup and log storage scenarios.
  - Sequential read/write scenarios of large files with capacity requirements (e.g., Hadoop offline data analysis scenarios).
  - Small relational database scenarios and development/testing scenarios with certain data reliability requirements.

**ESSD Cloud Disks are suitable for:**

  - Building small and medium-sized websites.
  - Applications with ordinary performance requirements.
  - Small relational databases.