What Are the Differences Between RDS and Other Database Solutions?

**Table 1** Differences between RDS and other database solutions
Function Item	RDS	Self-Built Database Service
Service availability	For details, see Elastic Cloud Service User Guide.	Requires self-guarantee, primary/standby relationship setup, and RAID setup.
Data reliability	For more information, see the Elastic Volume Service User Guide.	Requires self-guarantee, primary/standby relationship setup, and RAID setup.
System security	Defends against Anti-DDoS attacks and promptly repairs database security vulnerabilities.	Requires procurement of expensive devices and software, as well as manual detection and repair of security vulnerabilities.
Database backup	Automated backups	You must find backup storage space to back up the database by yourself and periodically check whether backup data can be restored.
Hardware and software investment	Supports on-demand pricing and scaling without requiring hardware and software investment.	Requires large investment in database servers.
System hosting	Not required.	The hosting cost is high.
Maintenance cost	Not required.	Full-time Database Administrators (DBAs) are required for maintenance, leading to high manpower costs.
Deployment and scaling	Supports elastic scaling, fast deployment, and on-demand enabling.	Requires procurement, deployment, and coordination of hardware.
Resource utilization	Bills users based on the resources actually used, resulting in high resource utilization.	Peak resource utilization is considered, leading to low resource usage.