Exploring DAOS Interfaces and Performance

TL;DR

This paper examines DAOS, a high-performance distributed object store using NVM, analyzing its interfaces, benchmarking its I/O performance, and comparing it with other storage systems to highlight its capabilities.

Contribution

It provides a detailed analysis of DAOS interfaces, benchmarks its performance, and compares it with other systems, demonstrating its potential for high-performance I/O.

Findings

DAOS offers versatile interfaces including native API and FUSE for compatibility.

Benchmark results show DAOS achieves high I/O performance on NVM hardware.

Performance comparison indicates DAOS outperforms traditional distributed file systems.

Abstract

Distributed Asynchronous Object Store (DAOS) is a novel software-defined object store leveraging Non-Volatile Memory (NVM) devices, designed for high performance. It provides a number of interfaces for applications to undertake I/O, ranging from a native object storage API to a DAOS FUSE module for seamless compatibility with existing applications using POSIX file system APIs. In this paper we discuss these interfaces and the options they provide, exercise DAOS through them with various I/O benchmarks, and analyse the observed performance. We also briefly compare the performance with a distributed file system and another object storage system deployed on the same hardware, and showcase DAOS' potential and increased flexibility to support high-performance I/O.