中文
VPS vs 云主机：核心区别是什么？
VPS 和云主机都比虚拟主机拥有更好的性能与控制权，但它们最大的区别在于：底层硬件的组织方式，以及因此带来的可用性与故障恢复能力。
什么是 VPS？
VPS（Virtual Private Server，虚拟专用服务器）通常是将一台物理服务器通过虚拟化技术划分成多台相互隔离的虚拟机。简单理解：一台物理机虚拟成多台机器。
- 优点：资源相对固定、可控；拥有管理员权限；安装软件/配置灵活；性价比高。
- 限制：VPS 的可用性在很大程度上依赖于承载它的那台物理机。一旦物理机出现硬件故障，可能需要维修更换部件，恢复时间会更长。
什么是云主机？
云主机（Cloud Hosting/Cloud Server）通常运行在由多台物理服务器组成的资源池/集群上，并配合共享存储、调度与高可用机制。当某台物理机发生故障时，实例可以在其他节点上更快恢复或迁移。
- 优点：高可用设计；硬件故障影响更小、恢复更快；扩展更灵活；支持在多台物理机之间迁移。
- 限制：架构更复杂；成本可能随资源与高可用能力提升而增加。
关键差异（快速对比）
- 可用性：VPS 更依赖单台物理机；云主机通常具备容灾/迁移能力，整体可用性更高。
- 硬件故障影响：VPS 物理机坏了可能需要较长维修时间；云主机可在其他物理机上更快恢复/切换。
- 迁移能力：云平台通常可以在多台物理机之间快速迁移实例（部分场景可做到更短中断）。
- 扩展方式：VPS 升级多为单机资源调整或计划迁移；云主机扩容通常更快速、更弹性。
什么时候选 VPS？
- 预算更敏感，但需要独立资源与更强控制权
- 网站/小型业务、开发测试、VPN/代理、游戏服等稳定负载
- 希望方案简单、上手快
什么时候选云主机？
- 对业务连续性要求更高（更看重高可用与快速恢复）
- 需要快速扩缩容、业务波动明显
- 更希望降低单点故障风险
如果你不确定怎么选，把你的用途、并发/流量和预算告诉我们，我们可以给出更合适的建议。
English
VPS vs Cloud Hosting: What’s the Difference?
Both VPS and Cloud Hosting give you more control and performance than shared hosting. The biggest difference is availability and how the underlying hardware is managed.
What is a VPS?
A VPS (Virtual Private Server) is created by virtualising a single physical server into multiple isolated virtual machines. In simple terms: one physical machine is split into many virtual servers.
- Pros: predictable resources, full root access, flexible software stack, great price/performance.
- Cons: your VPS ultimately depends on that physical host. If the host has a hardware failure, recovery may require repair and can take time.
What is Cloud Hosting?
Cloud Hosting runs your instance on a cluster of multiple physical servers with shared storage and orchestration. If one host fails, workloads can be moved to another host.
- Pros: higher availability design, faster recovery from hardware failure, easy scaling, and the ability to migrate between physical hosts quickly.
- Cons: can be more complex and sometimes costs more depending on the architecture and resources.
Key Differences (Quick Comparison)
- Availability: VPS availability depends heavily on a single physical server; cloud is designed to tolerate host failures.
- Hardware failure impact: a broken VPS host may require repair and longer downtime; cloud can typically failover/migrate much faster.
- Live migration: cloud platforms can often migrate instances between hosts with minimal interruption.
- Scaling: VPS upgrades usually mean resizing on the same host (or a planned migration); cloud scaling is generally faster and more flexible.
When should you choose VPS?
- Cost-sensitive projects that still need dedicated resources
- Development/testing, small-to-medium websites, VPN/proxy, game servers
- Users who want simplicity and full control with a stable workload
When should you choose Cloud Hosting?
- Business-critical services where uptime and rapid recovery are a priority
- Workloads that need fast scaling or frequent changes
- Applications that benefit from multi-host resilience
If you’re not sure, tell us your use case and expected traffic—we can recommend the most suitable option.
