A Reliability Enhancing Mechanism for a Large Flash Embedded Satellite Storage System

Author

Zertal, Soraya

Author_Institution

PRiSM Lab., Univ. of Versailles, Versailles

fYear

2008

fDate

13-18 April 2008

Firstpage

345

Lastpage

350

Abstract

In this paper, we propose an embedded satellite storage architecture based on the MLC NAND flash memory chips. We focus on data reliability and enhance it by adapting the RAID5 mechanism to the flash technology. This adaptation takes into account both the application and the technology characteristics : the specific access profile determines the striping granularity and the specific flash technology determines the data placement/management policy. It results an efficient mechanism, simple to implement at the FTL (flash translation layer) level without any use of the garbage collection. Thus, improving reliability using this mechanism leads to improving performance in the particular on-board satellite storage context.

Keywords

RAID; embedded systems; flash memories; integrated circuit reliability; storage management chips; MLC NAND flash memory chips; RAID5; data management; data placement; data reliability; embedded satellite storage architecture; flash translation layer; large flash embedded satellite storage system; Earth; Energy consumption; Energy storage; Flash memory; Laboratories; Nonvolatile memory; Satellites; Signal processing algorithms; Technology management; Throughput; Flash memory; RAID; performance; reliability; satellite; storage system;

fLanguage

English

Publisher

ieee

Conference_Titel

Systems, 2008. ICONS 08. Third International Conference on

Conference_Location

Cancun

Print_ISBN

978-0-7695-3105-2

Electronic_ISBN

978-0-7695-3105-2

Type

conf

DOI

10.1109/ICONS.2008.74

Filename

4497148