What is…
Immutable Storage
In the context of ransomware protection and , immutable storage is a central concept — but a misunderstood one. Not all forms of immutability are equivalent.
Software / Object Lock: immutability is enforced through software policies — retention policies, Object Lock, immutability flags. In Governance Mode, administrators with sufficient rights can lift these policies. In Compliance Mode with Multi-Person Authorization, this is harder, but immutability remains a configuration setting. With compromised admin credentials or zero-days in the management layer, immutability can be overridden.
Hardware : immutability is enforced at device level, independent of operating system, firmware, drivers or user privileges. Silent Cubes from FAST LTA enforce hardware at firmware level: once written, data is physically immutable. No administrator, no root access, no software update can modify written data.
The consequence for practice and compliance: software meets compliance requirements formally ( Art. 12) — but only in combination with documented organizational measures. Hardware meets these requirements technically, independent of organizational measures. In a tax audit, legal dispute or regulatory review, hardware is the more robust position.
Audit-Proof Archiving
Audit-proof archiving describes the legally required property of an archiving system that preserves documents completely, immutably, traceably and accessibly at all times — and that this can be demonstrated without gaps to tax authorities, auditors and data protection supervisory bodies.
WORM
WORM (Write Once, Read Many) refers to a storage principle in which data is written once and can technically no longer be altered or deleted — in hardware WORM, this immutability is a physical property of the storage controller, independent of software, operating system or user privileges.
WORM
WORM (Write Once, Read Many) refers to a storage principle in which data is written once and can technically no longer be altered or deleted — in hardware WORM, this immutability is a physical property of the storage controller, independent of software, operating system or user privileges.
WORM
WORM (Write Once, Read Many) refers to a storage principle in which data is written once and can technically no longer be altered or deleted — in hardware WORM, this immutability is a physical property of the storage controller, independent of software, operating system or user privileges.
DORA
DORA (Digital Operational Resilience Act, EU 2022/2554) is an EU regulation that has applied to all regulated financial market participants since January 2025, setting concrete requirements for ICT risk management, backup systems (Art. 11 and 12), third-party provider management (Art. 28–30) and incident reporting.
WORM
WORM (Write Once, Read Many) refers to a storage principle in which data is written once and can technically no longer be altered or deleted — in hardware WORM, this immutability is a physical property of the storage controller, independent of software, operating system or user privileges.
WORM
WORM (Write Once, Read Many) refers to a storage principle in which data is written once and can technically no longer be altered or deleted — in hardware WORM, this immutability is a physical property of the storage controller, independent of software, operating system or user privileges.
WORM
WORM (Write Once, Read Many) refers to a storage principle in which data is written once and can technically no longer be altered or deleted — in hardware WORM, this immutability is a physical property of the storage controller, independent of software, operating system or user privileges.