RAID Storage Device Grouping by Physical Capacity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing storage systems face challenges in efficiently managing storage devices in a redundant array of independent disks (RAID) when the number of devices exceeds a threshold, leading to suboptimal capacity utilization and reliability issues due to the inability to re-allocate storage devices effectively.
Innovation Solution
A method that combines storage devices in RAID into groups based on physical capacities and divides them into sets to optimize the effective capacity, allowing for the re-allocation of storage devices and supporting the addition of new devices, thereby improving capacity utilization and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If storage devices are grouped into sets when the number exceeds a threshold, then reliability is maintained, but capacity utilization becomes suboptimal
Solution Approach 1:
The patent divides storage devices into multiple groups based on their physical capacities, creating segmented categories (first group for devices with capacity ≥ first threshold, second group for devices with capacity < first threshold). This segmentation allows different allocation strategies for different capacity ranges, optimizing both reliability and capacity utilization while maintaining the threshold-based reliability constraint.
2Quantity of substance
If storage devices are allocated to RAID arrays, then effective capacity is achieved, but adaptability to new devices is limited
Solution Approach 1:
The patent implements a dynamic allocation mechanism where storage devices are allocated to RAID arrays based on real-time conditions. When a new storage device is added, the system dynamically evaluates whether to allocate it to an existing RAID array or create a new one, based on the device's physical capacity and current array configurations. This dynamic approach maintains effective capacity utilization while providing adaptability to new devices.
3Quantity of substance
If storage devices are divided into groups by physical capacity, then capacity utilization is optimized, but device complexity increases
Solution Approach 1:
The patent uses parameter-based classification (physical capacity thresholds) to simplify the complexity of managing diverse storage devices. By defining clear parameter thresholds (first threshold, second threshold) and categorizing devices accordingly, the system transforms a complex heterogeneous device management problem into a structured parameter-driven allocation process, optimizing capacity utilization while maintaining manageable complexity through standardized classification criteria.
Data Source
AI summary
Techniques provide for managing storage devices. Such techniques involve: combining storage devices in a redundant array of independent disks into a group of storage devices in an order of physical capacities of the storage devices; determining a first number of sets of storage devices based on a number of storage devices in the group and a threshold number of storage devices to be divided into each of the sets; and dividing, based on a configuration of the redundant array of independent disks, the group of storage devices into the first number of sets of storage devices, to optimize an effective capacity of the redundant array of independent disks.