OSSD: A case for object-based solid state drives

Author

Young-Sik Lee ; Sang-Hoon Kim ; Jin-Soo Kim ; Jaesoo Lee ; Chanik Park ; Seungryoul Maeng

Author_Institution

Comput. Sci. Dept., KAIST, Daejeon, South Korea

fYear

2013

fDate

6-10 May 2013

Firstpage

1

Lastpage

13

Abstract

The notion of object-based storage devices (OSDs) has been proposed to overcome the limitations of the traditional block-level interface which hinders the development of intelligent storage devices. The main idea of OSD is to virtualize the physical storage into a pool of objects and offload the burden of space management into the storage device. We explore the possibility of adopting this idea for solid state drives (SSDs). The proposed object-based SSDs (OSSDs) allow more efficient management of the underlying flash storage, by utilizing object-aware data placement, hot/cold data separation, and QoS support for prioritized objects. We propose the software stack of OSSDs and implement an OSSD prototype using an iSCSI-based embedded storage device. Our evaluations with various scenarios show the potential benefits of the OSSD architecture.

Keywords

disc drives; flash memories; object-oriented programming; quality of service; OSD; OSSD architecture; OSSD prototype; QoS support; block-level interface; flash storage; hot/cold data separation; iSCSI-based embedded storage device; intelligent storage devices; object-aware data placement; object-based SSD; object-based solid state drives; object-based storage devices; physical storage; prioritized objects; software stack; space management; Ash; Flash memories; Nonvolatile memory; Performance evaluation; Quality of service; Random access memory; Semantics;

fLanguage

English

Publisher

ieee

Conference_Titel

Mass Storage Systems and Technologies (MSST), 2013 IEEE 29th Symposium on

Conference_Location

Long Beach, CA

ISSN

2160-195X

Print_ISBN

978-1-4799-0217-0

Type

conf

DOI

10.1109/MSST.2013.6558448

Filename

6558448