Presentation
Balloon-ZNS: Constructing High-Capacity and Low-Cost ZNS SSDs with Built-in Compression
DescriptionThis paper proposes Balloon-ZNS that enables transparent compression in emerging storage devices ZNS SSDs to enhance cost efficiency. ZNS SSDs require data pages to be stored and aligned in logical zones and flash blocks, conflicting with the management of variable-length compressed pages. Motivated by an observation that compressibility locality widely exists in data streams, Balloon-ZNS performs compressibility-adaptive, slot-aligned storage management to address the conflict. Evaluation with RocksDB shows Balloon-ZNS can reap more than 80% of the compression gain while achieving -7% to 14% higher throughput than a vanilla ZNS SSD, on average, when data compressibility is not poor.
Event Type
Research Manuscript
TimeThursday, June 272:45pm - 3:00pm PDT
Location3008, 3rd Floor
Embedded Systems
Embedded Memory and Storage Systems