RAID-II: A high-bandwidth network file server

Ann L. Drapeau, Ken W. Shirriff, John H Hartman, Ethan L. Miller, Srinivasan Seshan, Randy H. Katz, Ken Lutz, David A. Patterson, Edward K. Lee, Peter M. Chen, Garth A. Gibson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

26 Scopus citations

Abstract

In 1989, the RAID (Redundant Arrays of Inexpensive Disks) group at U. C. Berkeley built a prototype disk array called RAID-I. The bandwidth delivered to clients by RAID-I was severely limited by the memory system bandwidth of the disk array's host workstation. We designed our second prototype, RAID-II, to deliver more of the disk array bandwidth to file server clients. A custom-built crossbar memory system called the XBUS board connects the disks directly to the high-speed network, allowing data for large requests to bypass the server workstation. RAID-II runs Log-Structured File System (LFS) software to optimize performance for bandwidth-intensive applications. The RAID-II hardware with a single XBUS controller board delivers 20 megabytes/second for large, random read operations and up to 31 megabytes/second for sequential read operations. A preliminary implementation of LFS on RAID-II delivers 21 megabytes/second on large read requests and 15 megabytes/second on large write operations.

Original languageEnglish (US)
Title of host publicationConference Proceedings - Annual International Symposium on Computer Architecture, ISCA
PublisherPubl by IEEE
Pages234-244
Number of pages11
Publication statusPublished - 1994
Externally publishedYes
EventProceedings of the 21st Annual International Symposium on Computer Architecture - Chicago, IL, USA
Duration: Apr 18 1994Apr 21 1994

Other

OtherProceedings of the 21st Annual International Symposium on Computer Architecture
CityChicago, IL, USA
Period4/18/944/21/94

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ASJC Scopus subject areas

  • Hardware and Architecture

Cite this

Drapeau, A. L., Shirriff, K. W., Hartman, J. H., Miller, E. L., Seshan, S., Katz, R. H., ... Gibson, G. A. (1994). RAID-II: A high-bandwidth network file server. In Conference Proceedings - Annual International Symposium on Computer Architecture, ISCA (pp. 234-244). Publ by IEEE.