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

随着技术的巨大发展，世界上的数字数据急剧增加。到2025年，数字数据总量将达到175泽字节。管理如此海量的数据成为一项关键且日益严峻的挑战。高性能和大容量存储系统的需求迅速增长，以满足这种大数据环境；但在单个存储设备中以低成本同时满足高性能和大容量仍然是一个严峻的挑战。为了实现这一目标，一种名为混合/可转换固态驱动器(SSD)的新兴存储设备提供了与传统存储设备相比独特的性能，能够满足这种环境的需求。然而，这一新兴设备尚未得到充分调查，无法充分发挥其潜力。该项目旨在充分发掘混合/可转换固态硬盘的能力。该项目的完成将启动当今存储系统的范式转变，通过高容量和高速访问更高效地处理海量数据。该研究还将影响新兴的存储市场，面向K-12、本科和少数族裔学生，并将研究成果融入课程，从而增强学生体验。本项目旨在通过以下三个方面开发和增强新兴的混合/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，这一推力集中在设备管理上，并提出了空间技术区域。2)在混合/可转换固态硬盘内构建了高性能廉价磁盘冗余阵列系统，在保持相同可靠性的同时有效保护存储在这些驱动器中的数据。3)为解决大数据问题，研究了一种在新兴存储设备中高效的键值存储系统。特别是，这一推力基于新兴存储设备的独特属性开发了一个高性能的日志结构合并树型关键字-值系统。该项目由CEISE/CCF董事会的SHF项目群和既定的激励竞争研究计划(EPSCoR)联合资助。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势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.