Dell servers include two types of recovery:
- BIOS recovery
- Rapid operating system (OS)
These features enable rapid recovery from corrupted BIOS or operating system images. In both cases, a special storage area is hidden from run-time software (BIOS, operating system, device firmware, so on). These storage areas contain pristine images that can be used as alternatives to the compromised primary software.
It is recommended to keep firmware updated to ensure servers have the latest features and security updates. However, there may need to rollback an update or install an earlier version if any issues are encountered after an update. Firmware Rollback to the previous version, is also verified against its signature.
At the end of a system’s life cycle, it either must be retired or repurposed. The goal of System Erase is to erase sensitive data and settings from the server storage devices and server non-volatile stores such as caches and logs so that no confidential information unintentionally leaks. It is a utility in Lifecycle Controller that is designed to erase logs, configuration data, storage data, cache, and any embedded apps.