Home > Storage > PowerFlex > White Papers > Dell APEX Block Storage for Public Cloud: Microsoft SQL Server Multi-Subnet Failover Clustering Deployment > Unique multi-AZ durability
The Dell APEX Block Storage self-healing architecture simplifies and increases the availability of infrastructure. It is designed to remain running even when it encounters failures. With fast rebuilds, Dell APEX Block Storage recovers rapidly from failures and keeps operating, without degrading performance or compromising availability. You can also extend this availability and configure it to protect your application availability across multiple availability zones.
Durability is defined by:
Architecting fault sets, or fault domains, within the public hyperscalers provides unprecedented levels of storage availability that were previously unavailable in any public cloud platform.