What it means
RAID and backup boundaries distinguish device-failure tolerance from independent recovery copies that protect against deletion, corruption, ransomware, application error, and site loss.
Why it matters
RAID keeps a storage set operating through some hardware failures; it does not provide historical, isolated, or geographically independent recovery by itself.
Practical focus
- Define the failure scenarios assigned to RAID, snapshots, replication, and backups and the security outcome it must support
- Apply separate recovery copies, isolation, versioning, retention, and restore testing through documented, reviewable configuration
- Verify backup success, recoverability, independence, deletion paths, and recovery time after changes and on a scheduled basis
- Plan for corruption or destructive change being replicated across every live copy, including rollback, ownership, and escalation
Common mistakes
- Enabling a feature without defining what it should protect
- Relying on defaults or one-time validation
- Granting broad exceptions that erase the control boundary
- Treating corruption or destructive change being replicated across every live copy as an operational surprise instead of a test case
Certification relevance
This subject appears in or supports the following certification bodies of knowledge: