When facing limited storage for backups, prioritize critical OS data based on system functionality and recovery needs. Start with system configuration files, such as boot.ini, fstab, or registry settings, which are vital for restoring system operations. Include kernel files and drivers, ensuring the OS can boot and interact with hardware. Backup user profiles and important logs to retain user settings and troubleshoot issues. Exclude non-essential data like temporary files. Compress or deduplicate backups to maximize space. In environments with version control, prioritize the most recent stable configurations for efficient recovery.

We faced a critical situation where limited storage space for backups became a major issue, leading to potential data loss. We had to quickly prioritize which OS data was vital for recovery. System and boot files took precedence to ensure we could restore operations. User data and key configurations were next, as these were irreplaceable. Despite our best efforts, we realized too late that some high-turnover data, like logs, hadn’t been backed up frequently enough, impacting our response time.

Diante de um problema como espaço de armazenamento limitado para backups, a prioridade recai sobre os dados que são essenciais para o funcionamento e a segurança do S.O. Primeiramente, eu priorizaria os arquivos de configuração, registros de sistema e dados de usuários que são críticos para restaurar o ambiente em caso de falha. Em seguida, daria atenção a dados relacionados à segurança, como chaves de criptografia e logs de segurança. Dados não essenciais ou que podem ser facilmente recriados, como arquivos temporários ou caches, são descartáveis. Além disso, aplicaria políticas de backup incremental e compactação para maximizar e otimizar o uso do espaço disponível, garantindo a proteção e a integridade dos dados mais críticos.

•Implementing compression and deduplication to optimize the backup size, •Reduce the retention policy and consider offloading archived files to cloud storage or other cost-effective storage solutions. •Includes /var/log in Linux and the Event Viewer in Windows as they are needed to investigate issues and cyber attacks •Include critical configuration files like registry settings in Windows and the /etc directory in Linux. •Include critical business data not only the database and application configurations but the actual data itself.

How do you know what is essential data to retain? Do DR exercises quarterly. This does two things. 1. It tests that backed up data is restorable data. 2. It tests the validity of the backup set. At the end of a DR exercise did you use a back-up? No? Ditch it. Have your privacy officer review the DR run book, and the DR test results.