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Heterogeneous servers have long been introduced to improve energy efficiency in warehouse-scale computers(WSCs). However, running latency-critical web-services on heterogeneous servers is still challenging because the overheads of transition between such servers heavily impact overall benefits and performance. We propose Montgolfier, a runtime power management system based on a latency-aware feedback...
Energy consumption has become an important issue in storage systems. Existing energy control solutions emphasize power consumption without considering re- liability degradation that results from overburden of those long standing disks. In this paper, we develop a novel multiple criteria optimization scheme based on Fuzzy Decision Making theory, for the Cool Energy Efficient Storage System called CEES...
NAND Flash-based devices (e.g., Solid State Disks) emerge as popular storage devices with ultra-fast performance in embedded systems. Previously, write amplification (i.e., page program operation amplification), resulting from restriction operations (i.e., out-of-place update and erase-before-write operations) in NAND Flash, is an essential metric to evaluate excessive page program operations in NAND...
In modern replication storage systems where data carries two or more multiple copies, a primary group of disks is always up to service incoming requests while other disks are often spun down to sleep states to save energy during slack periods. However, since new writes cannot be immediately synchronized onto all disks, system reliability is degraded. This paper develops PERAID, a new high-performance,...
Energy consumption is becoming a growing concern in data centers. Many energy-conservation techniques have been proposed to address this problem. However, an integrated method is still needed to evaluate energy efficiency of storage systems and various power conservation techniques. Extensive measurements of different workloads on storage systems are often very time-consuming and require expensive...
The improvement for energy efficiency has been increasingly becoming a major consideration in server and data center design, especially for the power-hungry ones. Numerous studies have provided various new methods or proposals for the building of "green" server and data center, but this paper concentrates on how different configuration schemes in a server effect practical performance and...
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