Storage Control Apparatus Modular Sub Units Signal Integrity
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Solution Overview
Problem
Existing storage control apparatuses face challenges in increasing storage capacity without compromising signal quality, as adding more expanded chassis increases the apparatus size and distances between control devices and storage devices, potentially degrading signal quality.
Innovation Solution
The proposed solution involves a storage control apparatus with sub storage units on a printed wiring board, where unit control devices and power supply devices are strategically positioned to maintain signal quality, using cable attachment devices to reduce communication cable distances, and allowing for independent operation of sub storage units to manage a larger number of hard disk drives without signal relay devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of expanded chassis is increased to provide larger storage capacity, then the storage capacity is improved, but the apparatus size and distance between control devices and storage devices increase, deteriorating signal quality
Solution Approach 1:
The storage control apparatus is divided into a control device and multiple independent sub storage units. Each sub storage unit is a self-contained module with its own control circuitry and storage devices, allowing the system to scale capacity by adding modules rather than expanding a single large unit. This segmentation maintains signal quality by keeping communication distances within each module short while providing large aggregate storage capacity.
Solution Approach 2:
The patent transitions from a distributed multi-chassis architecture to a integrated modular architecture where multiple sub storage units are combined within a single chassis. This dimensional reorganization allows high-density packing of storage devices while maintaining short communication paths through the use of high-speed serial cables and dedicated control circuits for each sub unit.
2Quantity of substance
If more storage devices are added to expanded chassis, then storage capacity is improved, but the distance between unit control devices and storage devices increases, deteriorating signal quality
Solution Approach 1:
Each sub storage unit is equipped with dedicated control circuits and high-speed serial communication interfaces positioned in close proximity to the storage devices. This local placement of control functionality ensures that communication distances remain short even when multiple storage devices are present, maintaining signal quality while providing high storage capacity.
3Quantity of substance
If the apparatus size is increased to accommodate more storage devices, then storage capacity is improved, but the placement size of the apparatus is enlarged
Solution Approach 1:
Multiple sub storage units are nested within a single chassis structure, with each sub unit containing storage devices and control circuits. This nested arrangement allows high-density integration of storage capacity while maintaining a compact overall apparatus footprint, as components are efficiently packed within the chassis rather than distributed across multiple external units.
Data Source
AI summary
A storage unit is provided with a plurality of sub storage units configured to include a plurality of hard disk drives, an enclosure, a printed wiring board, a power supply device, and a cable holder. The sub storage units each operate separately. The enclosure is provided in the array of the hard disk drives so that the distance can be shorter between the enclosure and each of the hard disk drives. With the provision of the cable holder, communications cables can be both brought closer to the printed wiring board. With such a configuration, the coupling point among the communications cables and the printed wiring board, and the enclosure can be favorably reduced. The resulting storage control apparatus can be mounted with a larger number of storage devices, thereby being able to maintain good signal quality.