TY - GEN
T1 - Optimization of storage quota based on user's usage distribution
AU - Kasahara, Yoshiaki
AU - Kawatani, Takuya
AU - Ito, Eisuke
AU - Simozono, Koichi
AU - Fujimura, Naomi
N1 - Publisher Copyright:
© 2015 IEEE.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2015/9/21
Y1 - 2015/9/21
N2 - To prevent shortage of storage space in a service system, an administrator usually set per-user quota as an upper limit of usable space for each user. To avoid service failure caused by resource exhaustion, the administrator tends to set a conservative quota value such as the storage capacity divided by the expected maximum number of users. In this research, we analyzed long-term storage usage history of our email system and file sharing system in Kyushu University. Mostly through the analyzed period, the usage pattern showed a long-tailed distribution similar to log-normal distribution. Also the overall storage consumption slowly increased during the analyzed period. Based on these analysis, we defined 'storage utilization ratio' to evaluate how the storage was effectively used. By approximating a storage utilization pattern as a power-law distribution, we proposed a method to calculate the optimal quota value to maximize the utilization ratio.
AB - To prevent shortage of storage space in a service system, an administrator usually set per-user quota as an upper limit of usable space for each user. To avoid service failure caused by resource exhaustion, the administrator tends to set a conservative quota value such as the storage capacity divided by the expected maximum number of users. In this research, we analyzed long-term storage usage history of our email system and file sharing system in Kyushu University. Mostly through the analyzed period, the usage pattern showed a long-tailed distribution similar to log-normal distribution. Also the overall storage consumption slowly increased during the analyzed period. Based on these analysis, we defined 'storage utilization ratio' to evaluate how the storage was effectively used. By approximating a storage utilization pattern as a power-law distribution, we proposed a method to calculate the optimal quota value to maximize the utilization ratio.
UR - http://www.scopus.com/inward/record.url?scp=84962094723&partnerID=8YFLogxK
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U2 - 10.1109/COMPSAC.2015.221
DO - 10.1109/COMPSAC.2015.221
M3 - Conference contribution
AN - SCOPUS:84962094723
T3 - Proceedings - International Computer Software and Applications Conference
SP - 149
EP - 154
BT - Proceedings - 2015 IEEE 39th Annual Computer Software and Applications Conference Workshops, COMPSACW 2015
A2 - Ahamed, Sheikh Iqbal
A2 - Chang, Carl K.
A2 - Crnkovic, Ivica
A2 - Hsiung, Pao-Ann
A2 - Yang, Jingwei
A2 - Huang, Gang
A2 - Chu, William
PB - IEEE Computer Society
T2 - 39th IEEE Annual Computer Software and Applications Conference Workshops, COMPSACW 2015
Y2 - 1 July 2015 through 5 July 2015
ER -