| Li K.; Kumpf; Horton P.; Anderson T., \A quantative analysis of disk drive power management in portable computers," Proc. of the 1994 Winter USENIX, p. 279-291. |
....NASD architecture. Some of these enhanced their scalability by deploying a clustered system architecture, but all data transfers had to go through the le servers. 2. 4 Power Reduction in Mobile Computers Power management by reducing disk power consumption has been studied for mobile computers [20, 21], however, the primary goal there is to extend the battery life. Similar ideas applied to NASD can reduce heating e ects by optimizing power consumption. potentially increasing the reliability of the disk subsystem [22] 2.5 Virtual Disks HPL s current e orts are directed towards coming up with ....
Li K.; Kumpf; Horton P.; Anderson T., \A quantative analysis of disk drive power management in portable computers," Proc. of the 1994 Winter USENIX, p. 279-291.
....file system architecture rather than the NASD architecture. Some of these enhanced their scalability by deploying a clustered system architecture, but all data transfers had to go through the file servers. Power management by reducing disk power consumption has been studied for mobile computers [20, 21], however, the primary goal there is to extend the battery life. Similar ideas applied to NASD can reduce heating effects by optimizing power consumption, potentially increasing the reliability of the disk subsystem [22] Phoenix is heavily influenced by SBVS in terms of its overall architecture ....
Li K.; Kumpf; Horton P.; Anderson T., "A quantative analysis of disk drive power management in portable computers," Proc. of the 1994 Winter USENIX, p. 279--291.
....laptop) mobile system. Forman et al. point out that the largest consumers in a typical laptop system are the disk drive and display [1] Li et al. show that spinning down the disk after it has been idle for as little as two seconds can have a dramatic effect on the power consumed by the disk drive [2], 3] Douglis et al. also focus on reducing power consumption of disk drives, comparing the approach of spinning down after a fixed number of seconds with an optimal off line algorithm that minimizes latency and maximizes power savings, showing that the off line algorithm performs approximately ....
....NI is powered up and in its idle state during these think times, performing no useful work. We have already seen in section 3.2 that the idling cost of the NI is a dominant power consumer. A simple strategy, similar to those employed to manage the power of disk drives and LCD screens on laptops [2], was modeled against the traces described above. Whenever the network interface has been idle for some fixed period of time, it switches into a low power sleep state. It remains in that state, unable to send or receive, until a PDA initiated transmission occurs. 0 20000 40000 60000 80000 100000 ....
Kester Li, Roger Kumpf, Paul Horton, , and Tom Anderson. A quantative analysis of disk drive power management in portable computers. In Proceedings 1994 Winter USENIX, pages 279--291, San Franscisco, California, Winter 1994.
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Kester Li, Roger Kumpf, Paul Horton, , and Tom Anderson. A quantative analysis of disk drive power management in portable computers. In Proceedings 1994 Winter USENIX, pages 279-- 291, San Franscisco, California, Winter 1994.
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