Degrading Data to Save the Planet
Degrading Data to Save the Planet
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DOI：
10.1145/3593856.3595896
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发表时间：
2023-06
期刊：
影响因子：
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通讯作者：
A. Zuck;Donald Porter;Dan Tsafrir
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文献类型：
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作者：
A. Zuck;Donald Porter;Dan Tsafrir
预计在未来十年，存储容量需求将呈指数级增长，其对计算设备总体碳足迹的影响也会如此。近年来，云服务提供商和设备供应商通过改善功耗和产品配送，大幅降低了其碳影响。然而，到2030年，基于闪存的存储设备的制造将占全球碳排放量的1.7%。因此，减少存储相关的生产碳排放是计算设备可持续性的关键。我们提出了面向可持续性的存储（SOS），这是一种针对个人存储设备的新型主机 - 设备协同设计，它通过以下方式巧妙地提高存储可持续性：（1）以大量生产的基于闪存的个人存储设备为目标；（2）通过优化现有材料的位密度，将硬件生产减少多达50%；（3）利用个人设备的有效使用寿命与其底层闪存较长使用寿命之间未充分利用的差距。SOS自动将占据大部分个人存储容量的低优先级文件存储在目前指定用于近线存储的高密度闪存上。为避免数据丢失，允许低优先级文件随着时间推移质量略有下降。切换到能最大限度提高生产材料利用率的高密度存储器，可减少个人存储设备的总体碳足迹。
Storage capacity demand is projected to grow exponentially in the coming decade and so will its contribution to the overall carbon footprint of computing devices. In recent years, cloud providers and device vendors have substantially reduced their carbon impact through improved power consumption and product distribution. However, by 2030, the manufacturing of flash-based storage devices will account for 1.7% of carbon emissions in the world. Therefore, reducing production-related carbon emissions of storage is key to sustainability in computing devices. We present Sustainability-Oriented Storage (SOS), a new host-device co-design for personal storage devices, which opportunistically improves storage sustainability by: (1) targeting widely-produced flash-based personal storage devices; (2) reducing hardware production through optimizing bit density in existing materials, up to 50%; and (3) exploiting an underutilized gap between the effective lifespan of personal devices and longer lifespan of their underlying flash. SOS automatically stores low-priority files, occupying most personal storage capacities, on high-density flash memories, currently designated for nearline storage. To avoid data loss, low-priority files are allowed to slightly degrade in quality over time. Switching to high-density memories, which maximize production material utilization, reduces the overall carbon footprint of personal storage devices.