Back Up a Sharded Cluster with Database Dumps使用数据库转储备份分片集群
Note
mongodump and mongorestore cannot be part of a backup strategy for 4.2+ sharded clusters that have sharded transactions in progress, as backups created with mongodump do not maintain the atomicity guarantees of transactions across shards.mongodump和mongorestore不能作为4.2+正在进行分片事务的分片集群的备份策略的一部分，因为使用mongodump创建的备份不能维护跨分片事务原子性的保证。
For 4.2+ sharded clusters with in-progress sharded transactions, use one of the following coordinated backup and restore processes which do maintain the atomicity guarantees of transactions across shards:对于具有正在进行的分片事务的4.2多个分片集群，请使用以下协调的备份和恢复过程之一，这些过程确实维护了跨分片的事务的原子性保证：
