---
title: "Lifecycle Policy"
type: concept
tags: [AWS, Storage, Cost-Optimization]
sources: []
last_updated: 2026-04-19
---

## Definition
生命周期策略是一种自动化规则，用于在不同存储层之间自动转换数据、设置保留策略和管理过期对象，无需手动操作。

## Key Features
- 自动存储层转换：根据预设规则将数据从热存储移动到冷存储
- 保留策略：设置快照和对象的保留期限
- 过期清理：自动删除过期对象和不完整的分段上传
- 成本优化：减少存储费用，优化存储支出

## AWS Services
- **S3 Lifecycle Policies**：转换对象到 S3 Standard → Intelligent-Tiering → Glacier 层级
- **EFS Lifecycle Policies**：将文件在标准层和不频繁访问层之间移动
- **EBS Snapshot Lifecycle**：归档快照到 Archive 层，使用 DLM 或 AWS Backup

## Implementation
```json
{
  "Rules": [
    {
      "ID": "MoveToGlacier",
      "Status": "Enabled",
      "Filter": {"Prefix": "archive/"},
      "Transitions": [
        {"Days": 365, "StorageClass": "GLACIER"}
      ],
      "Expiration": {"Days": 1825}
    }
  ]
}
```

## Connections
- [[S3-Intelligent-Tiering]] ← implements ← [[Lifecycle-Policy]]
- [[EFS-Inrequent-Access]] ← implements ← [[Lifecycle-Policy]]
- [[EBS-Snapshot-Archive]] ← uses ← [[Lifecycle-Policy]]