Home > Storage > ObjectScale and ECS > Product Documentation > Dell ObjectScale: Overview and Architecture > ObjectScale replication—eventual consistency
Bucket-to-bucket replication is available in ObjectScale. For a basic setting, administrators can choose to replicate objects from one bucket to another bucket. Each source bucket can be configured to replicate some or all its data to one or more destination buckets. The data replicated from the source bucket can be replicated based on a key prefix, a tag, or both to make replication granular. An IAM role must be selected for the source bucket account to replicate the data. The target bucket could be in one of the following object stores:
An administrator can configure bucket-to-bucket replication in one or both directions and can include a bucket’s entire contents or a subset of the data. Up to four unique destinations per replication policy can be configured. At any time, replication can be paused, suspended, or throttled.
Within the same bucket, storage services are strongly consistent. The ECS strongly consistent replication mechanics perform replication in the chunk layer within a region. These mechanics are based on the lower-layer logical chunk. For more information about the storage services’ lower-layer logical chunk in ECS, see ECS: Overview and Architecture.
Across buckets, storage services are eventually consistent in ObjectScale. ObjectScale performs replication between buckets at the object-level.