{FairyWREN}: A Sustainable Cache for Emerging {Write-Read-Erase} Flash Interfaces

S McAllister, B Berg, DS Berger… - … USENIX Symposium on …, 2024 - usenix.org
Datacenters need to reduce embodied carbon emissions, particularly for flash, which
accounts for 40% of embodied carbon in servers. However, decreasing flash's embodied …

Burstable cloud block storage with data processing units

J Shu, K Qian, E Zhai, X Liu, X Jin - 18th USENIX Symposium on …, 2024 - usenix.org
Cloud block storage (CBS) is a key pillar of public clouds. Today's CBS distinguishes itself
from physical counterparts (eg, SSDs) by offering unique burst capability as well as …

{MIDAS}: Minimizing Write Amplification in {Log-Structured} Systems through Adaptive Group Number and Size Configuration

S Oh, J Kim, S Han, J Kim, S Lee, SH Noh - 22nd USENIX Conference on …, 2024 - usenix.org
Log-structured systems are widely used in various applications because of its high write
throughput. However, high garbage collection (GC) cost is widely regarded as the primary …

Understanding Routable {PCIe} Performance for Composable Infrastructures

W Hou, J Zhang, Z Wang, M Liu - 21st USENIX Symposium on …, 2024 - usenix.org
Routable PCIe has become the predominant cluster interconnect to build emerging
composable infrastructures. Empowered by PCIe non-transparent bridge devices, PCIe …

BIZA: Design of Self-Governing Block-Interface ZNS AFA for Endurance and Performance

S Yi, S Sun, L Peng, Y Sun, MC Yang, Z Cao… - Proceedings of the …, 2024 - dl.acm.org
All-flash array (AFA) has become one of the most popular storage forms in diverse
computing domains. While traditional AFA implementations adopt the block interface to …

Hi-ZNS: High Space Efficiency and Zero-Copy LSM-Tree Based Stores on ZNS SSDs

R Liu, J Chen, P Chen, L Long, A Xiong… - Proceedings of the 53rd …, 2024 - dl.acm.org
The Zoned Namespace (ZNS) SSD is a newly introduced storage device and provides
several new ZNS commands to upper-level applications. Zone-reset command is one of the …

[PDF][PDF] Ensuring Compaction and Zone Cleaning Efficiency through Same-Zone Compaction in ZNS Key-Value Store

S Byeon, J Ro, JY Han, JU Kang… - … Conference on Massive …, 2024 - msstconference.org
In this paper, we address inefficiencies in compaction algorithms within ROCKSDB for ZNS
SSD, with a focus on the performance and lifetime issues arising from excessive copying of …

Time-constrained persistent deletion for key–value store engine on ZNS SSD

S Nie, T Lei, J Niu, Q Hu, S Liu, W Wu - Future Generation Computer …, 2025 - Elsevier
The inherent out-of-place update characteristic of the Log-Structured Merge tree (LSM tree)
cannot guarantee persistent deletion within a specific time window, leading to potential data …

[PDF][PDF] A call for research on storage emissions

S McAllister, F Kazhamiaka… - Proceedings of the …, 2024 - saramcallister.github.io
Major cloud providers have committed to lowering carbon emissions by 2030 across their
datacenters, and research has contributed many ideas on how this may be achieved …

[HTML][HTML] Efficient Wear-Leveling-Aware Data Placement for LSM-Tree based key-value store on ZNS SSDs

R Zhang, L Zhou, M Li, Y Tan, C Yang - Journal of King Saud University …, 2024 - Elsevier
Abstract Emerging Zoned Namespace (ZNS) is a new-style Solid State Drive (SSD) that
manages data in a zoned manner, which can achieve higher performance by strictly obeying …