红帽全球峰会27.21. 持久性卷快照
27.21.1. 概述
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重要
持久性卷快照是一个技术预览功能。技术预览功能不包括在红帽生产服务级别协议（SLA）中，且其功能可能并不完善。因此，红帽不建议在生产环境中使用它们。这些技术预览功能可以使用户提早试用新的功能，并有机会在开发阶段提供反馈意见。
如需红帽技术预览功能支持范围的更多信息，请参阅 https://access.redhat.com/support/offerings/techpreview/。
许多存储系统提供创建持久性卷(PV)的"快照"以防数据丢失的能力。外部快照控制器和置备程序提供了使用 OpenShift Container Platform 集群中的功能，并通过 OpenShift Container Platform API 处理卷快照。
本文档描述了 OpenShift Container Platform 中卷快照支持的当前状态。建议您熟悉 PV、持久性卷声明(PVC) 和 动态置备。
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