Home > Storage > PowerScale (Isilon) > Product Documentation > Cloud > PowerScale: CloudPools and ECS > Combining SyncIQ with ECS Geo-Replication
SyncIQ and ECS Geo-Replication work together to protect your data access in the event you have a site-wide failure. Also, the site contains both the PowerScale and ECS primary systems as illustrated in the following figure.
You can use SyncIQ and ECS Replication Group to configure a multisite architecture, with each site replicating to the other site. The following figure shows an example of a two-site configuration whereby each site has a PowerScale cluster and ECS system that replicate to each other.
In this configuration, CloudPool1 tiers data from Site1 PowerScale cluster to Site1 ECS system. Similarly, Site2 has a CloudPool2 that tiers data to its local ECS system. It then uses SyncIQ and the ECS replication group to replicate data between sites. It is strongly recommended that the OneFS version of Site1 and Site2 are consistent. If the OneFS versions of Site1 and Site2 are not consistent, see NDMP and SyncIQ support. In this scenario, all data access is performed locally. If there is a site-wide failure, fail over operations can make both CloudPool1 and CloudPool2 data available from the available site.