NDLI: DRPM:dynamic speed control for power management in server class disks

Content Provider	ACM Digital Library
Author	Sivasubramaniam, Anand Franke, Hubertus Kandemir, Mahmut Gurumurthi, Sudhanva
Abstract	A large portion of the power budget in server environments goes into the I/O subsystem - the disk array in particular. Traditional approaches to disk power management involve completely stopping the disk rotation, which can take a considerable amount of time, making them less useful in cases where idle times between disk requests may not be long enough to outweigh the overheads. This paper presents a new approach called DRPM to modulate disk speed (RPM) dynamically, and gives a practical implementation to exploit this mechanism. Extensive simulations with different workload and hardware parameters show that DRPM can provide significant energy savings without compromising much on performance. This paper also discusses practical issues when implementing DRPM on server disks.
Starting Page	169
Ending Page	181
Page Count	13
File Format	PDF
ISSN	01635964
DOI	10.1145/871656.859638
Journal	ACM SIGARCH Computer Architecture News (CARN)
Volume Number	31
Issue Number	2
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1981-04-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Server disks Power management
Content Type	Text
Resource Type	Article

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DRPM:dynamic speed control for power management in server class disks