Vertically Translating Load/Unload Ramp for Reduced-Head HDD
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current archival storage solutions, such as traditional hard disk drives, are costly and inefficient for active archives that require random data access, and alternative approaches like large-diameter HDDs with unique components and assembly processes are not cost-effective or easily adoptable.
Innovation Solution
A reduced-head hard disk drive with an actuator elevator mechanism and a vertically translating and rotating load/unload ramp mechanism, which reduces the number of read-write heads and uses a standard HDD form factor, incorporating a stepper motor-driven ramp adapter and proximity sensing for precise head positioning, allowing for efficient access to multiple disks with fewer heads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional hard disk drives are used for archival storage, then data storage capacity is achieved, but cost is undesirably high and access efficiency is poor for active archives
Solution Approach 1:
The ramp mechanism is made dynamically adjustable, allowing it to change its vertical position and angular orientation based on operational requirements. The ramp can be positioned at different heights to access multiple disk surfaces and rotated to align with different actuator positions, enabling a single ramp to serve multiple functions that would traditionally require multiple static ramps and heads
Solution Approach 2:
A single load/unload ramp mechanism is designed to perform multiple functions: it can service multiple disk surfaces by vertical translation, accommodate different actuator positions through rotation, and provide load/unload operations for reduced-head configurations. This multi-functional design eliminates the need for separate ramps for each disk or head, reducing overall system complexity and cost
2Quantity of substance
If HDDs with extra large diameter disks or extra tall form factor are used, then archival storage capacity is increased, but capital investment and manufacturing complexity increase
Solution Approach 1:
Instead of increasing disk diameter or drive height to add storage capacity, the invention utilizes the vertical dimension through translation of the ramp mechanism. Multiple disk surfaces are accessed by moving the ramp vertically to different height positions, allowing increased storage capacity within a conventional form factor without requiring larger disks or taller drive enclosures
Solution Approach 2:
The system changes the operational parameters of the ramp mechanism, specifically its vertical position and rotational angle, to access different disk surfaces. By varying these parameters dynamically, the system can service multiple disks with a single ramp, achieving increased storage capacity without manufacturing larger physical components
3Device complexity
If fewer read-write heads are used in reduced-head HDD, then cost is reduced, but access to multiple disk surfaces becomes more complex
Solution Approach 1:
The vertically translating and rotating ramp serves as an intermediary mechanism between the reduced number of heads and the multiple disk surfaces. Instead of having multiple heads to directly access multiple surfaces, the ramp acts as a mediating structure that can be positioned and oriented to bring a single head into alignment with any required disk surface, simplifying the head configuration while maintaining access capability
Data Source
AI summary
An approach to a reduced-head hard disk drive (HDD) involves a load/unload (LUL) ramp subsystem that includes a ramp assembly that includes a rotatable latch link configured for mechanical interaction with a head-stack assembly (HSA) and a LUL ramp coupled with the latch link, configured such that in response to a force applied to the latch link by the HSA, the latch link rotates which disengages a magnetic latch and drives the LUL ramp to rotate into an operational state disengaged from any recording disk of a multiple-disk stack. The subsystem may further include a motor configured to drive rotation of a lead screw to which the ramp assembly is attached, to drive vertical translation of the ramp assembly, thereby providing for loading the vertically-translatable HSA onto and off of each of the disks of the disk stack.