Storage Controller Memory Alignment for Write Performance
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Solution Overview
Problem
Enterprise storage systems face reduced performance in terms of throughput and latency due to storage devices performing operations other than I/O operations, which affects the alignment of memory access operations with their geometry.
Innovation Solution
A storage array controller receives information about the memory layout of a storage device, determines the write size based on this layout, and sends write requests to specific locations within the memory unit, optimizing write operations by breaking up larger requests into smaller, non-overlapping units aligned with the device's geometry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If storage devices perform operations other than I/O operations, then functionality is enhanced, but performance (throughput and latency) is reduced
Solution Approach 1:
The patent segments memory access operations into smaller units that align with the storage device's geometry (e.g., page size, block size). By dividing large memory access requests into multiple aligned operations, the system can efficiently utilize the storage device's native structure while maintaining high performance for I/O operations.
2Ease of operation
If memory access operations are not aligned to storage device geometry, then flexibility in memory access is improved, but write efficiency is reduced
Solution Approach 1:
The patent performs preliminary alignment of memory access operations to the storage device's geometry before executing write operations. By pre-processing memory access requests to ensure they are properly aligned with page boundaries, block structures, and other geometric constraints, the system maintains operational flexibility while maximizing write efficiency.
3Ease of operation
If write requests are not broken into smaller units, then operation simplicity is maintained, but parallel writing capability is reduced
Solution Approach 1:
The patent automatically segments large write requests into smaller units that correspond to the storage device's geometric structure (e.g., multiple pages, blocks, or sectors). This segmentation enables parallel writing operations to different regions of the storage device, significantly improving throughput while transparently handling the complexity of broken-down operations.
Solution Approach 2:
The patent introduces a new dimension of parallelism by breaking write requests into multiple independent operations that can be executed simultaneously across different storage regions. This dimensional expansion from sequential to parallel processing increases writing capability while maintaining operational simplicity through automated management.
Data Source
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AI summary
A method, comprising receiving, by a storage device, a write request from a storage array controller, the write request associated with an amount of data sized in dependence upon information describing a layout of memory in the storage device, and writing, by the storage device, the data to a memory unit, the data written to a location within the memory unit in dependence upon the information, wherein the write request includes a physical address of the location in the storage device to store the data, wherein the physical address refers to the location in the storage device for an entire life of the storage device.