Home > Storage > PowerMax and VMAX > Storage Admin > Reliability, Availability, and Serviceability on PowerMax 2500 and 8500 Arrays > Hardware design
PowerMax architecture is highly redundant; able to survive multiple component failures and continue operating, ensuring uncompromised data integrity. All components are hot swappable and have high MTBF. It is important to note there is no SPOF with PowerMax.
Compute nodes are completely power independent and dual node failures are extremely unlikely. Nodes are serviced from the front, negating the need to touch any cables. Each node has 1+1 power supplies, meaning that the system can endure loss of a PSU from each node, or a whole power zone, and continue running. Memory remains accessible on the fabric for many types of node failures. Each node has dedicated dual batteries to facilitate system up time during the vault process. In cases of total power loss, the vault operation is fast, simple, and data is preserved.