Energy pack options
Hewlett Packard Enterprise offers two centralized backup power source options to back up write cache content on the controllers in case of an unplanned server power outage.
HPE Smart Storage Hybrid Capacitor
IMPORTANT:The HPE Smart Storage Hybrid Capacitor is only supported on Gen10 and later servers.
One energy pack option can support multiple devices. An energy pack option is required for 900 series controllers. Once installed, the status of the energy pack displays in HPE iLO. For more information, see the HPE iLO user guide on the Hewlett Packard Enterprise website.