Single point of failure definition
A single point of failure represents the failure of a single hardware component that can lead to loss of data access or potential loss of data.
Single point of failure does not include multiple/rolling hardware errors, such as triple disk failure, dual disk shelf module failure, and so on.
All hardware components included with your storage system have demonstrated very good reliability with low failure rates. If a hardware component such as a controller or adapter fails, you can use the controller failover function to provide continuous data availability and preserve data integrity for client applications and users.