NDLI: Design and modeling of clustered RAID

Content Provider	IEEE Xplore Digital Library
Author	Merchant, A. Yu, P.S.
Copyright Year	1992
Description	Author affiliation: NEC USA, Princeton, NJ, USA (Merchant, A.)
Abstract	A redundant array of independent disks (RAID) consisting of G disks provides protection against single disk failures by adding one parity block for each G-1 data blocks. In a clustered RAID, the G data/parity blocks are distributed over a cluster of C disks, C>G, thus reducing the additional load on each disk due to a single disk failure. The authors present a fast algorithm for distributing parity groups of size G over C disks. They create mappings for each parity group based on almost-random permutations. An analytical model is constructed to predict recovery time and read/write performance. The analysis shows that the clustered RAID is significantly more tolerant of disk failure than the basic RAID scheme. Both recovery time and performance degradation during recovery are substantially reduced in the clustered RAID.<>
Starting Page	140
Ending Page	149
File Size	799256
Page Count	10
File Format	PDF
ISBN	0818628758
DOI	10.1109/FTCS.1992.243606
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-07-08
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Failure analysis Degradation Throughput Mirrors Laboratories National electric code Protection Predictive models Performance gain Costs
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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