Each architecture solves a different problem. Cloud enables collaboration. NAS delivers local speed. Data diodes enforce one-way flow. Immutable backups enable recovery. Only offline secure storage delivers prevention, zero network exposure, zero attack surface, zero breach vectors.

Cloud Storage

Always connected, always exposed

Permanent network presence means any connected attacker, ransomware, or misconfiguration can reach your data. Multi-tenancy means your security is only as strong as your weakest co-tenant.

NAS

Local network storage, locally exposed

Network-attached storage sits on the LAN, making it a primary target for lateral movement. Ransomware routinely encrypts NAS devices first. No physical isolation means no breach prevention.

Data Diodes

One-way transfer, still cabled

Enforces one-way flow but both sides remain cabled to infrastructure. The receive side is still network-accessible and vulnerable. No identity management, no succession, no managed storage layer.

Immutable Backups

Cannot be altered, but still reachable

Data is write-protected but the storage infrastructure remains network-connected. Attackers can still exfiltrate, enumerate, or destroy access paths even if they cannot modify the backup itself.

Offline Secure Storage

Physically disconnected by design

Intentional friction ensures only authorised, deliberate access to crown jewel assets. Scheduled connectivity windows add a governance layer that prevents impulsive access and deters unauthorised retrieval, security through architecture, not policy.

Capability	Cloud	NAS	Data Diodes	Immutable	OSS
Physically disconnected from network	Always connected via IP	LAN or WAN connected	One-way only, still cabled	Network-attached, write-protected	Layer 1 physical air gap
Zero network attack surface	IP address always scannable	Exposed on local network	Receive side still reachable	Reachable via network protocols	No IP, no port, no path
Prevents ransomware reaching data	Ransomware spreads via network	Often first target on LAN	Outbound only, but still connected	Data immutable but still reachable	Cannot encrypt what is not connected
No third-party cloud dependencies	Relies on AWS, Azure, GCP	On-premises hardware	On-premises hardware	Often cloud-hosted	Dedicated hardware, no cloud
Dedicated single-tenant hardware	Multi-tenant shared infrastructure	Your own device	Your own appliance	Shared storage pools	Your own physical drives
Identity-locked access (KYC/MFA)	Password + MFA typical	Basic user/password	No user-level identity	Admin credentials	KYC, AML, and MFA verified
Data recovery after total network compromise	Compromised with the network	Compromised with the LAN	Receive side may survive	Recoverable but may be exfiltrated	Untouched, offline, intact
No admin backdoor or support access	Provider staff can access	Local admin access	Vendor firmware updates	Admin console accessible	Zero third-party access
Hardware-level encryption at rest	Software encryption typical	Varies by model	Data in transit only	Varies by provider	AES-256 with Quantum Key Exchange
Digital succession planning	Account dies with user	No succession model	No succession model	No succession model	Vault Buddy next-of-kin access

Firevault OSS

Cloud Storage

Cloud Storage

Always has an IP address

Can always be found and attacked

NAS

Lives on the local network

First target for lateral movement

Data Diodes

One-way cabled connection

Receive side still network-exposed

Immutable Backup

Network-attached, write-protected

Can be reached, enumerated, exfiltrated

Offline Secure Storage

No IP, no network, no path

Cannot be found, cannot be breached

Day-to-day workflows

Teams needing real-time collaboration on non-sensitive operational data.

• Day-to-day collaboration
• Frequently accessed files
• Team file sharing
• Operational documents
• Version-controlled projects

Local performance needs

Organisations needing fast on-premises access without cloud latency or cost.

• Local file sharing
• Media libraries
• On-premises backup targets
• Development environments
• High-throughput ingest

Unidirectional transfer

OT/IT boundary enforcement where data must flow one way with no return path.

• OT to IT transfer
• SCADA telemetry export
• One-way log shipping
• Cross-domain feeds
• Classified data export

Post-breach restoration

Ensuring point-in-time recovery after ransomware or accidental deletion.

• Disaster recovery
• Compliance archives
• Point-in-time restore
• Backup retention policies
• Regulatory evidence

Pre-breach protection

Assets that must never be breached, exfiltrated, or held to ransom. Zero attack surface by design.

• Crown jewel protection
• Succession and legacy data
• Cryptographic keys
• Board-level documents
• Data that must never be breached