When you have the backup, place a copy of it in a highly available file system; otherwise, a disk outage on your deployment manager server could make the backups unavailable to you.

当您进行备份后，将其副本放到一个高度可用的文件系统中；否则，部署管理器服务器出现磁盘故障会使这些备份变得不可用。

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The deployment scripts need to be written in such a way that metadata is only written to the database if the corresponding file exists on the file system.

部署脚本需要以这种方式进行编写：如果在文件系统中存在相应的文件的话，就只将元数据写入数据库中。

youdao

Currently, the only way to ensure total rollback capability is to do a full file system and database backup before the deployment.

目前，确保全面回滚能力的唯一方法是在部署前进行完整的文件系统和数据库备份。

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