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NVCache: Increasing the Effectiveness of Disk Spin-Down Algorithms with Caching

T. Bisson, S.A. Brandt, D.D.E. Long
14th IEEE International Symposium on Modeling, Analysis, and Simulation  
We show that combining NVCache with an adaptive disk spin-down algorithm, a hard disk's power consumption can be reduced by up to 90%.  ...  We have designed and implemented a technique to extend disk spin-down times using a small non-volatile storage cache called NVCache, which contains a combination of caching techniques to service reads  ...  With larger NVCache sizes, a read-cache is effective at increasing spin-down periods.  ... 
doi:10.1109/mascots.2006.34 dblp:conf/mascots/BissonBL06 fatcat:ti34bwdqmvapbnxpwkgnhreqxm

Flushing Policies for NVCache Enabled Hard Disks

Timothy Bisson, Scott A. Brandt
2007 24th IEEE Conference on Mass Storage Systems and Technologies (MSST 2007)  
One of the goals of upcoming hybrid hard disks is to reduce power consumption by adding a small amount of nonvolatile flash memory (NVCache) to the drive itself.  ...  By using the NVCache to satisfy writes while the rotating media is spun-down, hard disk power consumption can be decreased by lengthening low-power periods.  ...  Conclusion We have presented several algorithms which improve the efficiency of synchronizing NVCache data to rotating media for upcoming hybrid hard disks when the NVCache is used as a write-cache to  ... 
doi:10.1109/msst.2007.4367989 fatcat:kqc2schrk5circ7iboxyxto6qa

A Hybrid Disk-Aware Spin-Down Algorithm with I/O Subsystem Support

Timothy Bisson, Scott A. Brandt, Darrell D.E. Long
2007 Performance, Computing and Communications Conference (IPCCC), IEEE International  
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  ...  With such support, NVCache utilization is conveyed to the spin-down algorithm in the context of extended spin-down periods.  ... 
doi:10.1109/pccc.2007.358900 dblp:conf/ipccc/BissonBL07 fatcat:5ht5wkomyzgp5g4jyb23ckxgam

RMA: A Read Miss-Based Spin-Down Algorithm using an NV Cache

Hyotaek Sh, Jaegeuk Kim, Dawoon Jung, Jin-Soo Kim, Seungryoul Maeng
2008 2008 IEEE International Conference on Computer Design  
spin-down periods, exploiting the NV cache effectively.  ...  As a new trend, an NV cache is used to make a disk spin down longer by servicing read/write requests instead of the disk.  ...  The amount of the reduced power consumption enlarges as the NV cache size increases because both AWC and RMA are more effective with the larger size of the NV cache. VII.  ... 
doi:10.1109/iccd.2008.4751910 dblp:conf/iccd/ShimKJKM08 fatcat:ihufzjuazjgrhhpbwiomulk4mi

Reducing Hybrid Disk Write Latency with Flash-Backed I/O Requests

T. Bisson, S. A. Brandt
2007 Proceedings of the ... International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunication Systems  
Hybrid disk drives place a small amount of flash memory (NVCache) on the drive itself which can be leveraged by the host and has the potential to increase I/O performance and reduce hard disk power consumption  ...  One of the biggest bottlenecks in desktop-based comput ing is the hard disk with I/O write latency being a key contributor.  ...  Hybrid disks present an opportunity to increase performance over traditional disk drives and reduce power consumption while still minimizing the reliability and spin-up latency impact of spin-down algorithms  ... 
doi:10.1109/mascots.2007.57 dblp:conf/mascots/BissonB07 fatcat:o3mkifnbnrfpljyjirlkviezhi

BEST: Best-effort energy saving techniques for NAND flash-based hybrid storage

Hyotaek Shim, Jin-soo Kim, Seungryoul Maeng
2012 IEEE transactions on consumer electronics  
In the hybrid storage, the flash cache is used for reducing disk activities and prolonging disk spin-down time.  ...  During the spin-down time, write requests can be temporarily stored in the flash cache, whereas read requests should be carefully handled to avoid frequent disk spin-ups.  ...  Second, a read missbased spin-down algorithm is devised for making a disk spin down efficiently, considering the read hit ratio of the flash cache.  ... 
doi:10.1109/tce.2012.6311326 fatcat:mdqur7d7afde7e7crg46mzzawq

EXCES: External caching in energy saving storage systems

Luis Useche, Jorge Guerra, Medha Bhadkamkar, Mauricio Alarcon, Raju Rangaswami
2008 High-Performance Computer Architecture  
We present the design and implementation of EXCES, an external caching system that employs prefetching, caching, and buffering of disk data for reducing disk activity.  ...  Power consumption within the disk-based storage subsystem forms a substantial portion of the overall energy footprint in commodity systems.  ...  Choosing the Disk Spin-down Timeout While researchers have suggested the benefits of using adaptive disk spin-down timeouts [9, 12, 15] , the current version of EXCES uses a static disk spin-down timeout  ... 
doi:10.1109/hpca.2008.4658630 dblp:conf/hpca/UsecheGBAR08 fatcat:t72ycvfwqzgyviwv5dtbbx62cu

On the Trade-Offs among Performance, Energy, and Endurance in a Versatile Hybrid Drive

Zhichao Li, Ming Chen, Amanpreet Mukker, Erez Zadok
2015 ACM Transactions on Storage  
We designed and developed GreenDM, a versatile hybrid drive that combines Flash-based SSDs with traditional HDDs. The SSD can be used as cache or as primary storage for hot data.  ...  We have designed, developed, and carefully evaluated GreenDM with a variety of workloads using commodity SSD and HDD drives.  ...  We thank Vasily Tarasov for help with Filebench. We thank Rajesh Aavuty for help with paper review and experiments preparation.  ... 
doi:10.1145/2700312 fatcat:5mhw4ox3i5edjmo7tjv45uboay

Optimizing Energy Efficiencies in Cloud Data Center Resources with Availability Constraints

2020 International Journal of Engineering and Advanced Technology  
Given the increased adoption of the Cloud Computing Applications and the Businesses getting to be Data-driven, there is a huge increase in the number of Data Centers and the Size and amount of resources  ...  Cloud infrastructure Resources hosted in Data Centers, support the effective execution of Cloud computing applications.  ...  Some of them have a small amount of NVcache built into the Disks which help with the performance as with [139] .  ... 
doi:10.35940/ijeat.c4746.029320 fatcat:o2w67g7i2rbcpcbixvstg55lfm