To protect against outages at a system or data-center level, we recommend using replication to a remote site. This use case includes planned maintenance events, unplanned power outages, or natural disasters. PowerStore supports replication to simplify disaster recovery for block resources. Starting in PowerStoreOS 3.0, file resources are also supported for asynchronous replication. In PowerStoreOS 3.0, PowerStore appliances support native metro volume replication, which provides synchronous replication of spanned block storage volumes across two PowerStore clusters in metro distance for VMFS datastores. PowerStoreOS 4.0 and higher additionally supports Windows and Linux use cases for metro. PowerStoreOS 4.0 and higher also added support for metro volume groups, which maintain write order consistency. Native synchronous replication is also supported with PowerStoreOS 4.0 and later for volumes, volume groups, and file. Volume groups require write order consistency to be enabled for synchronous replication. For details on how to set up and use the replication features on PowerStore, see the white papers Dell PowerStore: Replication Technologies and Dell PowerStore: Metro Volume on the Dell Technologies Info Hub.
