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Volume-Management.md

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-When running large clusters, it is common to add more volume servers, or some volume servers are down, or some volume servers are replaced. These topology changes can cause missing volume replicas, or unbalanced number of volumes on volume servers.
+When managing large clusters, it's common to add more volume servers, have some servers go down, or replace others. These changes can lead to missing volume replicas or an uneven distribution of volumes across the servers.
 
 ## Optimize volumes
 See [[Optimization]] page on how to optimize for concurrent writes and concurrent reads.