DMCA
A hybrid diskaware spin-down algorithm with I/O subsystem support (2007)
Cached
Download Links
| Venue: | In Proceedings of the 26th IEEE International Performance, Computing and Communications Conference |
| Citations: | 24 - 2 self |
BibTeX
@INPROCEEDINGS{Bisson07ahybrid,
author = {Timothy Bisson and Scott A. Brandt and Darrell D. E. Long},
title = {A hybrid diskaware spin-down algorithm with I/O subsystem support},
booktitle = {In Proceedings of the 26th IEEE International Performance, Computing and Communications Conference},
year = {2007}
}
Share
 |
 |
 |
 |
||
OpenURL
Abstract
To offset the significant power demands of hard disk drives in computer systems, drives are typically powered down during idle periods. This saves power, but accelerates duty cycle consumption, leading to earlier drive failure. Hybrid disks with a small amount of non-volatile flash memory (NVCache) are coming on the market. We present four I/O subsystem enhancements that exploit the characteristics of hybrid disks to improve system performance: 1) Artificial Idle Periods, 2) a Read-Miss Cache, 3) Anticipatory Spin-Up, and 4) NVCache Write-Throttling. These enhancements reduce power consumption, duty cycling, NVCache block-erase impact, and the observed spinup latency of a hybrid disk, resulting in lower power consumption, greater reliability, and faster I/O. 1.
Keyphrases
subsystem support hybrid diskaware spin-down algorithm hybrid disk power consumption read-miss cache nvcache block-erase impact significant power demand anticipatory spin-up observed spinup latency nvcache write-throttling hard disk drive non-volatile flash memory computer system subsystem enhancement drive failure duty cycling system performance small amount duty cycle consumption idle period artificial idle period
