Building BIOS Architecture

Persistent Storage preserves authoritative BIOS information across shutdown, power loss, hardware replacement, and software migration.

The storage architecture shall maintain:

building identity;

BIOS identity and version;

configuration baselines;

component and Interface registries;

topology and dependency maps;

Engineering Profiles;

authorization records;

state checkpoints;

event and audit logs;

fault and maintenance records;

Digital Passport references;

recovery data;

cryptographic trust records.

Data shall be classified by:

criticality;

confidentiality;

retention period;

mutability;

required redundancy;

local availability;

recovery priority.

Authoritative configuration changes shall use transactional storage. An interrupted write shall not leave the building with a partially applied baseline.

Integrity checking shall detect corruption, unauthorized modification, incomplete migration, and inconsistent replicas.

Backups shall be:

encrypted where appropriate;

versioned;

periodically verified;

separated from the primary storage failure domain;

restorable without dependence upon a single vendor.

Essential configuration shall use documented, exportable formats. Proprietary storage implementation may be used internally but shall not prevent authorized migration.

Storage limits shall not cause silent deletion of safety, security, configuration, certification, or lifecycle records. Retention and archival policies shall be explicit.