An organization operates a large data center that supports critical business operations. Recently, the organization has struggled with frequent power interruptions leading to downtime and loss of data. To address this issue, the chief information security officer $($CISO$)$ decides to review the data center's resilience and recovery strategies, particularly emphasizing backup power. To increase the resilience and recovery capabilities of the data center and ensure operations continue even during a power failure, which of the following options should the CISO consider? $($Select the two best options.$)$

Purchase additional servers

Implement a UPS

Enhance the firewall system

Deploy a redundant power supply unit in each server