SSD Decommissioning via OTP-Grounded High-Voltage Disablement
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Solution Overview
Problem
Existing methods for decommissioning solid-state drives (SSDs) are inefficient, power-intensive, and pose security risks due to the difficulty in securely erasing data, especially in high-performance computing environments where rapid and secure data destruction is often impractical.
Innovation Solution
A method involving permanently disabling command sequences, internal communication channels, and interfaces in SSDs by using one-time programmable (OTP) elements to render the SSDs inaccessible, ensuring data remains secured even when disconnected from a host system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional data erasure methods are used, then data can be removed, but the process is power-intensive and time-consuming
Solution Approach 1:
The patent extracts and destroys the high voltage generator component itself rather than attempting to erase data through traditional means. By permanently disabling the high voltage generator through oxide breakdown in OTP elements, the system eliminates the ability to generate high voltage needed for NVM operations, achieving secure data destruction without power-intensive erasure processes
Solution Approach 2:
The patent converts the potentially harmful high voltage generator into a beneficial disabled state. By intentionally breaking down oxide layers in OTP elements to permanently disable the high voltage generator, the system transforms a functional component into a permanent disablement mechanism, achieving secure data destruction while minimizing energy consumption
2Loss of time
If traditional decommissioning methods are used, then data can be erased, but the process takes a long time
Solution Approach 1:
The patent performs preliminary action by disabling the high voltage generator before any data access or erasure operations can occur. By permanently disabling the high voltage generator through oxide breakdown in OTP elements, the system prevents any future NVM operations regardless of subsequent commands, achieving rapid decommissioning with guaranteed data inaccessibility
Solution Approach 2:
The patent applies preliminary anti-action by preemptively disabling the high voltage generator to prevent any future data access operations. This counter-action against potential data retrieval operations ensures that even if the NVM is later accessed, no commands can be executed, achieving secure decommissioning without time-consuming erasure processes
3Ease of manufacture
If the NVM media is simply removed, then physical destruction occurs, but data may still be accessible through other means
Solution Approach 1:
The patent introduces an intermediary mechanism - the high voltage generator - as a critical enabler for NVM operations. By permanently disabling this intermediary component through oxide breakdown in OTP elements, the system creates a fundamental barrier that prevents any data access operations, whether through direct NVM access or indirect means, achieving secure decommissioning without complex physical destruction processes
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach securely and permanently decommissions SSDs, minimizing operational impact and resource consumption while ensuring data inaccessibility, thus addressing the inefficiencies and security concerns of conventional methods.
Implementation Method 1
breaking down an oxide in a one-time programmable (OTP) element
Data Source
AI summary
A method of decommissioning a solid-state drive including a non-volatile memory media and a controller. Decommissioning is achieved by a disabling command sequences, internal communication channels, and interfaces. A non-volatile memory media is permanently disabled by short circuiting an internal high voltage generator to an electrical ground so that a high voltage cannot be generated for an operation required to access data on the memory media. The short circuit path may be enabled using a one-time programmable element. Further, an ability of a non-volatile memory media interface to initiate a command sequence that is required to access the memory media is disabled, and a status confirmation indicating that the memory media has been disabled is issued. A controller is also permanently disabled by disabling an ability of a flash interface to communicate with the non-volatile memory media so that no commands can be received by the memory media.