Accelerator Cache Auto-Configuration in Storage Arrays
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Solution Overview
Problem
Existing data storage systems face challenges in automatically managing accelerator caches, particularly in detecting and configuring them without user intervention, and in efficiently utilizing storage space from multiple devices while ensuring cache coherence and redundancy.
Innovation Solution
A method and system that automatically detect the presence of accelerator cache storage devices, configure an accelerator cache using a portion of the storage space, and manage it by determining the appropriate space to use, creating or concatenating caches, and disabling it when necessary, allowing for non-redundant caching and seamless integration with primary storage systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If automatic detection and configuration of accelerator cache is implemented, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The storage processor automatically detects the presence of accelerator cache storage devices and configures the accelerator cache without requiring user intervention. The system self-determines the portion of storage space to use, creates or concatenates caches, and manages configuration automatically, allowing the system to serve itself rather than requiring external configuration.
2Productivity
If accelerator cache is configured using portion of storage space from multiple devices, then productivity is improved, but device complexity increases
Solution Approach 1:
The accelerator cache is configured using a portion of storage space from multiple storage devices rather than requiring a single dedicated device. The storage processor segments the cache configuration across available storage resources, allowing flexible utilization of storage capacity while improving productivity through accelerated data access.
Solution Approach 2:
Storage devices in the system can serve dual purposes: acting as primary storage and contributing portions of their capacity to form the accelerator cache. This multi-functionality allows the same physical storage resources to fulfill multiple roles, improving productivity without requiring additional dedicated cache hardware.
3Ease of operation
If accelerator cache management includes automatic detection and configuration, then ease of operation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The storage processor continuously monitors and detects the presence and status of accelerator cache storage devices, automatically adjusting configuration based on system state. This feedback mechanism ensures proper cache management while maintaining ease of operation, as the system self-corrects based on detected conditions without requiring precise manual configuration.
Data Source
AI summary
The storage processor of a data storage system such as a storage array automatically uses a first portion of an accelerator cache storage device for an accelerator cache and a second portion of the accelerator cache storage device for a physical storage tier upon detecting the presence of the accelerator cache storage device installed in the data storage system, such as when a storage device is plugged into a designated slot of the data storage system, without requiring any user configuration of the accelerator cache or physical storage tier and without specification by the user of the type(s) of data to be cached in the accelerator cache or stored in the physical storage tier.