Auto-sync: update nexus workspace
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wiki/concepts/ReservedInstances.md
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wiki/concepts/ReservedInstances.md
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---
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title: "Reserved Instances"
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type: concept
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tags:
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- AWS
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- Cost-Optimization
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- FinOps
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aliases:
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- Reserved Instances
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- RI
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- 预留实例
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last_updated: 2026-05-12
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---
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## Overview
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Reserved Instances(预留实例)通过预付费或无预付承诺,获得相比 On-Demand 最高 60-72% 的折扣。适用于稳定运行的长期工作负载。
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## Key Characteristics
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- **承诺期限**:1年或3年
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- **支付选项**:全额预付、部分预付、无预付
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- **范围**:区域级或可用区级
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- **类型**:Standard(可交换)、Convertible(可转换)
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## When to Use
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- 生产环境中的稳定工作负载
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- 数据库实例
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- 核心业务应用
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- 7×24 运行的服务
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## Related Pages
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- [[FinOps]]
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- [[SavingsPlans]]
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- [[SpotInstances]]
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- [[ctp-topic-13-cloud-finops-micro-focus-policies-best-practices-to-optimize-the-co]]
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- [[ctp-topic-63-optimise-resource-cost-using-automation]]
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