Title :
Performance analysis of RAID for different communication mechanism between RAID controller and string controllers
Author :
Feng, Dan ; Jin, Hai ; Zhang, Jiang-ling
Author_Institution :
Storage Syst. Nat. Lab., Huazhong Univ. of Sci. & Technol., Wuhan, China
fDate :
9/1/1996 12:00:00 AM
Abstract :
A Stochastic Petri Nets (SPN) model of the orthogonal RAID is constructed. After analyzing the performance of the system we can see that the performance of the system has the relationship with the choice of communication mechanism, which is the polling mechanism or interrupt mechanism, between the RAID controller and the string controllers. The faster the rate of the “Go to Communication” transition in the SPN, the higher the average utilization of the string controller, and the better the performance of RAID. The rate is larger under the polling mechanism than that under the interrupt mechanism in RAID. Thus, the polling mechanism between the RAID controller and the string controllers should be adopted to improve the performance of RAID
Keywords :
Petri nets; computer interfaces; magnetic disc storage; performance evaluation; redundancy; stochastic systems; Go to Communication transition; RAID controller; SPN model; communication mechanism; interrupt mechanism; orthogonal RAID; performance analysis; polling mechanism; stochastic Petri net; string controller; Communication system control; Delay; Equations; Exponential distribution; Hydrogen; Performance analysis; Petri nets; Process control; Random variables; Stochastic processes;
Journal_Title :
Magnetics, IEEE Transactions on
