Reliability

Combined with other cloud services, such as storage and disaster recovery backup, VMs support specification adjustments, data backup, auto recovery from backup, and quick recovery from failure.

• Traditional servers are prone to failures because their reliability is subject to hardware reliability, and manual backup is required.

• Traditional servers require manual data recovery, which is difficult and time-consuming.

Security

The security service ensures that VMs work in a secure environment. It can enhance the security of your data, nodes, and websites, and reduce hacker intrusion risks by monitoring program execution and detecting brute-force attacks and logins from unexpected locations.

• Additional security services need to be purchased and deployed.

• It is difficult to control access from multiple users to multiple traditional servers.

Elasticity

• VM specifications can be adjusted, including vCPUs and memory.

• Capacity expansion is supported for system disks and data disks.

• Auto scaling (AS) policies can be configured to automatically increase or decrease the number of VMs based on business needs, thereby optimizing resource utilization.

• Configuration is fixed and cannot be adjusted to suit various business needs.

• Modifying configuration requires hardware upgrades, which is time-consuming and causes unpredictable service downtime, making it impossible to ensure business scalability and continuity.

Usability

• A simple, easy-to-use centralized management console is used to simplify O&M operations.

• A wide range of services, including networks, storage, security, and big data, can be deployed with simple configuration.

• Little software support is provided, and complete operations are required to deploy each new server.

• It is difficult to find all the services you need from one service provider.