SHF: Small: Exploring and Enhancing Capabilities of Emerging Hybrid/Convertible Solid-State Drives

随着科技的飞速发展，世界上的数字数据也在飞速增长。到2025年，数字数据总量将达到175zb。管理如此庞大的数据成为一个关键且日益严峻的挑战。为覆盖大数据环境，对高性能、大容量存储系统的需求迅速增加；然而，如何在单一存储设备中以低成本同时满足高性能和大容量是一个关键的挑战。为了实现这一目标，一种名为混合/可转换固态硬盘（SSD）的新兴存储设备提供了与传统存储设备相比独特的属性，可以满足这种环境的需求。然而，这种新兴设备尚未得到充分研究，无法发挥其全部潜力。该项目旨在充分探索混合/可转换固态硬盘的能力。该项目的完成将使当今存储系统的模式发生转变，以更高的容量和高速访问更有效地处理大量数据。这项研究还将影响新兴的存储市场，向K-12、本科和少数民族学生推广，并将研究成果纳入课程，从而提高学生的体验。本项目旨在通过以下三个重点来发展和增强新兴的混合/可转换固态硬盘的能力：1)开发一种新的混合/可转换固态硬盘管理方案，以平衡存储系统的性能和容量。特别是，这一推力侧重于设备管理，并推进了区域命名空间技术。2)在混合/可转换ssd内内置高性能廉价磁盘冗余阵列系统，以有效地保护存储在这些驱动器中的数据，同时保持相同的可靠性。3)研究新兴存储设备中高效的键值存储系统，解决大数据问题。特别是，这一推进基于新兴存储设备的独特属性，开发了一种高性能的基于日志结构合并树的键值系统。该项目由CISE/CCF理事会的SHF计划集群和促进竞争研究的既定计划（EPSCoR）共同资助。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

The world’s digital data has increased immensely with the tremendous development of technology. By 2025, the total amount of digital data will reach 175 Zettabytes. It becomes a critical and increasing challenge to manage this huge amount of data. The demand for high-performance and large-capacity storage systems is rapidly increased to cover this big data environment; still, it is a critical challenge to satisfy both high performance and large capacity in a single storage device with a low cost. To achieve this goal, an emerging storage device named hybrid/convertible Solid-State Drive (SSD) provides unique properties compared to traditional storage devices and can satisfy the requirement in such an environment. However, the emerging device has not been fully investigated and cannot reach its full potential. This project aims to fully explore the abilities of hybrid/convertible SSDs. The completion of this project will initialize a paradigm shift in today’s storage systems to handle massive amounts of data more efficiently with high capacity and high-speed access. The research will also impact the burgeoning storage market, implement outreach to K-12, undergraduate, and minority students, and incorporate research results into courses, thus enhancing the student experience.This project intends to develop and enhance the capabilities of the emerging hybrid/convertible SSD through the following three thrusts: 1) A novel management scheme for hybrid/convertible SSDs is developed to balance the performance and capacity of the storage system. In particular, this thrust focuses on device management and advanced the zone named space technique. 2) A high-performance Redundant Array of Inexpensive Disks system is built inside hybrid/convertible SSDs to efficiently protect data stored in these drives while retaining the same reliability. 3) An efficient key-value store system in the emerging storage devices is investigated to solve big data issues. In particular, this thrust develops a high-performance log-structured merge tree-based key-value system based on the unique properties of the emerging storage device.This project is jointly funded by the SHF program cluster of the CISE/CCF directorate and the Established Program to Stimulate Competitive Research (EPSCoR).This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.