What resilience feature protects PowerEdge servers from power fluctuations?

Redundant power supply units (PSUs) are a key resilience feature for PowerEdge servers designed to ensure continuous operation and protect against power fluctuations. The primary role of redundant PSUs is to provide a backup source of power if one PSU fails. In the event of a power issue, such as a fluctuation or complete failure, the remaining operational PSU takes over seamlessly, thereby minimizing downtime and maintaining server performance.

This redundancy is vital for critical applications where uptime is essential. Additionally, redundant PSUs can often share the load, effectively reducing the stress on each unit and enhancing overall reliability. The setup is especially valuable in environments demanding high availability, as it mitigates the risk associated with single points of failure regarding power delivery.

Other options offer different aspects of power management or surge protection, but they do not provide the same level of resilience specifically aimed at handling power fluctuations and ensuring uninterrupted power flow to servers. Surge protectors primarily guard against voltage spikes, while uninterruptible power supplies (UPS) serve as backups during outages, and power management sensors monitor usage without providing failover capabilities. Therefore, the use of redundant PSUs is the most effective method for ensuring that PowerEdge servers remain operational despite power issues.