Rack-Mounted Data Storage Cable Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Data storage units with retractable disk drives face a limitation in standard rack size due to the length of supporting structures, which prevents them from fitting properly when the drives are extended for maintenance, leading to potential cable snagging and operational issues.
Innovation Solution
The implementation of a cable management system using flexible ribbon cables and a guide module with constant force springs that maintain cable tension and prevent tangling, allowing the support units to slide in and out while keeping the cables organized and preventing snagging, thus enabling the data storage unit to fit within standard-sized racks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the support structures are made longer to allow disk drives to be extended for maintenance, then maintenance accessibility is improved, but the storage unit cannot fit into standard sized rack cabinets
Solution Approach 1:
The support structures are designed to be movable between retracted and extended positions. When maintenance is needed, the support structure carrying the disk drive can be extended outward from the storage unit, providing easy access. When not in use, it is retracted to minimize the storage unit's depth, allowing it to fit in standard rack cabinets.
Solution Approach 2:
The storage unit is divided into separate functional modules: the main storage unit housing and the movable support structures. This segmentation allows the support structures to be independently extended or retracted, decoupling the maintenance accessibility requirement from the storage unit's overall dimensions.
2Ease of operation
If the support structures are extended for maintenance access, then disk drive accessibility is improved, but cable snagging and operational issues occur
Solution Approach 1:
Flexible ribbon cables are used to connect the disk drives on the movable support structures to the control unit. These flexible cables can accommodate the movement and extension of the support structures without snagging or damaging rigid connections, maintaining reliable electrical connections throughout the extension and retraction cycles.
Solution Approach 2:
The flexible ribbon cables act as intermediaries between the stationary control unit and the movable disk drives. They provide a flexible connection that mediates the relative movement between these components, allowing the support structures to extend and retract while maintaining continuous electrical connectivity without cable damage.
3Ease of manufacture
If standard ribbon cables are used with movable support structures, then manufacturing is simplified, but cable tangling and binding occur during retraction
Solution Approach 1:
Constant force springs are attached to the support structures to automatically maintain tension on the ribbon cables during movement. As the support structure extends or retracts, the springs self-adjust to keep the cables taut, preventing them from becoming loose, tangled, or bound, and automatically returning them to an organized state.
Solution Approach 2:
The constant force springs are pre-installed and pre-tensioned to anticipate the cable movement requirements. Before the support structure moves, the springs are already positioned to provide the necessary tension, ensuring that cables remain organized and taut throughout the entire range of motion without requiring manual intervention.
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 solution allows for safe and efficient access to disk drives for maintenance without cable snagging, ensuring the data storage unit remains operational and fits within standard rack dimensions, enhancing maintenance accessibility and operational reliability.
Implementation Method 1
a guide module with constant force springs that maintain cable tension and prevent tangling
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An apparatus (101) for storing data and supplying stored data. The apparatus comprises a support unit (110, 111, 112) having a plurality of connectors (1400), each connector connected to one of a plurality of data storage elements (504). The apparatus also comprises a cable (607, 608) having a first end connected to the support unit and a second end connected to a main part (114). The main part defining a first space containing a portion of the cable, and a second space for containing the support unit. The support unit (110, 111, 112) is movable between (i) a first position providing access to the data storage elements and (ii) a second position in which the data storage elements are located within the second space. A guide means (701, 1945) is configured to cause the cable to develop at least two loops (1406, 1407, 2053, 2054) within the first space while the support unit is moved to the second position.