Home > Storage > PowerScale (Isilon) > Product Documentation > Data Protection > Dell PowerScale SyncIQ: Architecture, Configuration, and Considerations > CloudPools failover and failback implications
SyncIQ provides a seamless failover experience for clients. The experience does not change if CloudPools is configured. After a failover to the target cluster, clients continue accessing the data stored at the cloud provider without interruption to the existing workflow. The target cluster has read-only access to the specified cloud provider. As clients request files stored in the cloud, the target cluster retrieves these files with the SmartLinks and delivers them in the same method the source cluster did.
However, if the files are modified those changes are not propagated to the cloud provider. Instead, any changes to the cloud tiered files are stored locally in the target cluster’s cache. When the failback is complete to the source cluster, the new changes to the cloud tiered files are sent to the source cluster. The source cluster then propagates the changes to the cloud provider.
If a failover is permanent, or for an extended time, the target cluster requires read/write access to the cloud provider. The read/write status is updated through the isi cloud access command. For more information about this command, see the administration and solution guide referenced above.