Home > Storage > PowerScale (Isilon) > Product Documentation > Cloud > PowerScale: CloudPools and ECS > Protecting cloud data
ECS supports geo-replication which provides access to the cloud data from multiple sites. Geo-replication requires:
When files have been archived from a PowerScale cluster to ECS, the cloud data will automatically be replicated to another ECS asynchronously. As shown in the following figure, ECS geo-replication works together with CloudPools.
Note: Cloud data is compressed when replicating the data from one ECS to another. Any encrypted data will remain encrypted when replicating the data.
It is recommended to enable Access During Outage (ADO) on the CloudPools buckets and configure a load balancer for the primary and secondary ECS. This configuration help you continue to access cloud data when the primary ECS has an outage. If the primary ECS comes back, any changes will be asynchronously replicated back to the primary ECS.
For the steps on failover to secondary ECS and failback to primary ECS, see Appendix A: Step-by-step configuration example.