Title :
Reliability and performance of RAIDs
Author :
Schwarz, T.J.E. ; Burkhard, W.A.
Author_Institution :
Gemini Storage Syst. Lab., California Univ., San Diego, La Jolla, CA, USA
fDate :
3/1/1995 12:00:00 AM
Abstract :
We define and analyze the ACATS declustering scheme for use with the classic Level 5 as well as MDS RAIDs. ACATS provides a paradigm for distributed sparing and checking as well. Using Markov models we calculate the reliability of classic Level 5 as well as MDS RAIDs both with and without ACATS. Our results demonstrate, for fixed hardware configurations, trade-offs between performance and reliability within these RAID organizations. Our analysis assumes a transaction oriented environment.<>
Keywords :
Markov processes; magnetic disc storage; performance evaluation; reliability; ACATS declustering; Level 5 RAIDs; MDS RAIDs; Markov models; Redundant Arrays of Independent Disks; checking; distributed sparing; hardware configurations; magnetic disk storage; performance; reliability; transaction oriented environment; Computer interfaces; Cooling; Hardware; Laboratories; Magnetic analysis; Power supplies; Power system reliability; Protection; Telephony; Temperature control;
Journal_Title :
Magnetics, IEEE Transactions on
