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A Simulation Result of Replicating Data with Another Layout for Reducing Media Exchange of Cold Storage

Satoshi Iwata, Kensuke Shiozawa
2016 USENIX Workshop on Hot Topics in Storage and File Systems  
Cold storage devices such as tape and optical discs are a good solution for reducing the total cost of ownership for storing data.  ...  A simulation result shows 31% average relative latency reduction with capacity efficiency remaining at 91%.  ...  Satoshi Ogata, and other members of Splunk reseller at the FUJITSU SOCIAL SCIENCE LABORATORY LTD. for providing us with sample logs collected at their site.  ... 
dblp:conf/hotstorage/IwataS16 fatcat:a6dimra2tnfo7aahmfkrbmbz64

Design Tradeoffs for SSD Performance

Nitin Agrawal, Vijayan Prabhakaran, Ted Wobber, John D. Davis, Mark S. Manasse, Rina Panigrahy
2008 USENIX Annual Technical Conference  
This paper presents a taxonomy of such design choices and analyzes the likely performance of various configurations using a trace-driven simulator and workload traces extracted from real systems.  ...  Solid-state disks (SSDs) have the potential to revolutionize the storage system landscape.  ...  Acknowledgements We are grateful to the DiskSim team for making their simulator available, and to Dushyanth Narayanan for porting it to Windows.  ... 
dblp:conf/usenix/AgrawalPWDMP08 fatcat:d6bkislycnhgjc36jn6wswsn34

A Heat Pump-Based Multi-source Renewable Energy System for the Building Air Conditioning: The IDEAS Project Experience

Silvia Cesari, Alessia Natali, Barbara Larwa, Eleonora Baccega, Elena Mainardi, Marco Cavazzuti, Agostino Piazzi, Donato Vincenzi, Michele Bottarelli
2021 TECNICA ITALIANA-Italian Journal of Engineering Science  
Within the project framework, a small-scale building, featuring a plethora of sensors for test purposes, and two large-scale buildings are meant to be equipped with the renewable energy system proposed  ...  Preliminary data suggest that while multi-source systems coupled with heat pumps are particularly effective, it is complex to obtain suitable thermal energy storages on urban scale.  ...  4 Detailed layout of the small-scale plant and of the installed sensors Figure 4 4 shows a detailed layout of the small-scale plant.  ... 
doi:10.18280/ti-ijes.650102 fatcat:yuo3ycgjmrbszpyy3c73nm5n4q

Quantifying Thermal Characteristics of Stormwater through Low Impact Development Systems

Charlene LeBleu, Mark Dougherty, Keith Rahn, Amy Wright, Ryan Bowen, Rui Wang, Jeisson Orjuela, Kaylee Britton
2019 Hydrology  
A data logging system with thermistors located on, within, and at exits of the microcosms, recorded resulting stormwater temperature flux.  ...  This research helps establish baseline data to study heat removal effectiveness of pervious materials when used alone or in combination as a treatment train with other stormwater control measures such  ...  The funders had no role in the design of the study, in the collection, analyses, or interpretation of data, in the writing of the manuscript, or in the decision to publish the results.  ... 
doi:10.3390/hydrology6010016 fatcat:2uuba25jafcbtgckh3vsyprbx4

Advancing District Heating & Cooling Solutions and Uptake in European Cities

Jack Corscadden and Aksana Krasatsenka Sofia Lettenbichler
2022 Zenodo  
storage, are prerequisites for the smart energy systems of the future.  ...  Discover the uptake of DHC solutions in cities and its replication potential. Find the answers to the most pressing questions when looking into replicating these solutions!  ...  Heat exchangers in geothermal applications are exposed to extreme conditions involving corrosive media and their heat exchange performance can degrade with time resulting from the buildup of deposit.  ... 
doi:10.5281/zenodo.6616290 fatcat:3blvvbxksbctdg3l3mcohyg67e

Experimental Validation and Numerical Simulation of a Hybrid Sensible-Latent Thermal Energy Storage for Hot Water Provision on Ships

Andrea Frazzica, Marco Manzan, Valeria Palomba, Vincenza Brancato, Angelo Freni, Amedeo Pezzi, Bianca M. Vaglieco
2022 Energies  
The storage was specifically developed for delivering hot water on board of ships. Accordingly, a commercial PCM was selected and tested.  ...  In this study, the development and testing of a hybrid thermal energy storage (TES) including phase change material (PCM) macro-capsules inside a vertical sensible tank is presented.  ...  Numerical Simulation Results Discussion The numerical models developed demonstrate that the experimental results could be replicated with quite good results using the two methods, however, with strong  ... 
doi:10.3390/en15072596 fatcat:7xmwlbgckfhtnoiieepfslgwfy

Energy-Aware Disk Storage Management : Online Approach with Application in DBMS

Peyman Behzadnia, Yi-Cheng Tu, Bo Zeng, Wei Yuan
2017 International Journal of Database Management Systems  
for efficient state configuration and data migration.  ...  We introduced a DPM optimization model integrated with model predictive control (MPC) strategy to minimize power consumption of the disk-based storage system while satisfying given performance requirements  ...  Thus, there is a strong demand for reducing the energy consumption in storage systems. Hence, in this paper, we tackle the problem of designing a power-aware disk storage system in database servers.  ... 
doi:10.5121/ijdms.2017.9101 fatcat:olvuhpx225bqzcnhyzl2ud7uz4

Survey of Storage Systems for High-Performance Computing

2018 Supercomputing Frontiers and Innovations  
In current supercomputers, storage is typically provided by parallel distributed file systems for hot data and tape archives for cold data.  ...  A thorough understanding of today's storage infrastructures, including their strengths and weaknesses, is crucially important for designing and implementing scalable storage systems suitable for demands  ...  Acknowledgements Parts of this publication are enabled by the following projects: BigStorage (Storage-based Convergence between HPC and Cloud to Handle Big Data), funded by the European Union under the  ... 
doi:10.14529/jsfi180103 fatcat:hi3qctpl7rfvjgl53pxmqwqviy

Modelling a molten salt thermal energy system – A validation study

Jari Lappalainen, Elina Hakkarainen, Teemu Sihvonen, Margarita M. Rodríguez-García, Ville Alopaeus
2019 Applied Energy  
We present modelling of an indirect MS TES system connected to a thermal oil loop through TEMA type heat exchangers, model calibration with half of the experimental data, and finally, validation simulations  ...  Easily define a mixture of molten salt and non-condensable gas for rigorous dynamic simulation. • Enables system-wide thermal and hydrodynamic analysis for energy storage processes. • New experimental  ...  The VTT authors also wish to acknowledge VTT Technical Research Centre of Finland for part funding this research, and address special thanks to the wonderful personnel at MOSA.  ... 
doi:10.1016/j.apenergy.2018.10.009 fatcat:snaww7f7frcx3fzccmif72fqzi

Business Model With Alternative Scenarios (D4.1)

Jakob Luettgau, Julian Kunkel, Jens Jensen, Bryan Lawrence
2017 Zenodo  
The report begins with a description of how climate and weather applications make use of HPC systems, the arising challenges and data requirements, and some trends that are likely to impact future data  ...  This report summarizes the work on requirements and business models for the storage infrastructure within weather and climate data centres (although much of the work has wider applicability).  ...  For instance, to compare the old results with newer results or to answer new scientific questions with the recorded simulation results.  ... 
doi:10.5281/zenodo.1228749 fatcat:fdwtwtfcwjhhbkiusam6njs26a

A guideline to link the off-design performance of a micro-gas turbine to a heavy-duty gas turbine in a test rig that aim to investigate flexibility of GTCC

Tommaso Reboli, Iacopo Rossi, Alberto Traverso, Giorgio Torelli, U. Desideri, L. Ferrari, J. Yan
2021 E3S Web of Conferences  
In a panorama of strong requirement for grid flexibility and non-dispatchable renewable penetration, the survival of a thermal power plant is strictly linked with operating successfully in compensating  ...  This is based on a Turbec T100 micro gas turbine (or microturbine), a Mayekawa heat pump and a phase-change material energy storage.  ...  As already mentioned, one of the key component of the plant is the cold thermal energy storage (TES -shown in Fig. 5) , that is essentially a shell & tube heat exchanger where the water-glycol vector  ... 
doi:10.1051/e3sconf/202123805003 fatcat:xu2dba7zgfazjmlg2tciyytuma

Optical data storage media

T. W. McDaniel, P. C. Arnett
1996 IBM Journal of Research and Development  
This attention to a broad range of technical details is essential to ensure reliable storage of data on removable optical disk media. Wopyright 1996 by International Business Machines Corporation.  ...  Media life and data archivability are established by a combination of time-zero and accelerated life stress tests of media mechanical and recording Performance.  ...  Also, we thank all our colleagues in optical storage technology for sharing their knowledge and expertise with us over the years. Much of their work is reflected in our discussion.  ... 
doi:10.1147/rd.403.0311 fatcat:5iopw26mczbwvmfkizqg7lekzi

Towards Efficient and Scalable Data-Intensive Content Delivery: State-of-the-Art, Issues and Challenges [chapter]

Irene Kilanioti, Alejandro Fernández-Montes, Damián Fernández-Cerero, Anthony Karageorgos, Christos Mettouris, Valentina Nejkovic, Nikolas Albanis, Rabih Bashroush, George A. Papadopoulos
2019 Msphere  
This chapter presents the authors' work for the Case Study entitled "Delivering Social Media with Scalability" within the framework of High-Performance Modelling and Simulation for Big Data Applications  ...  Social data streams raise a variety of practical challenges: derivation of real-time meaningful insights from effectively gathered social information, a paradigm shift for content distribution with the  ...  Conclusions This article describes the results of the collaborative work performed as part of High-Performance Modelling and Simulation for Big Data Applications (cHiPSet) COST Action 1406.  ... 
doi:10.1007/978-3-030-16272-6_4 fatcat:qe35ltdzozfylax3q5taphzjf4


Alexander Thomson, Thaddeus Diamond, Shu-Chun Weng, Kun Ren, Philip Shao, Daniel J. Abadi
2012 Proceedings of the 2012 international conference on Management of Data - SIGMOD '12  
Calvin is a practical transaction scheduling and data replication layer that uses a deterministic ordering guarantee to significantly reduce the normally prohibitive contention costs associated with distributed  ...  Many distributed storage systems achieve high data access throughput via partitioning and replication, each system with its own advantages and tradeoffs.  ...  To better understand Calvin's potential for interfacing with other disk configurations, flash, networked block storage, etc., we also implemented a storage engine in which "cold" data was stored in memory  ... 
doi:10.1145/2213836.2213838 dblp:conf/sigmod/ThomsonDWRSA12 fatcat:aiqvzfu3aveevh5kficqazpk44

Tombolo: Performance enhancements for cloud storage gateways

Suli Yang, Kiran Srinivasan, Kishore Udayashankar, Swetha Krishnan, Jingxin Feng, Yupu Zhang, Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau
2016 2016 32nd Symposium on Mass Storage Systems and Technologies (MSST)  
Object-based cloud storage has been widely adopted for their agility in deploying storage with a very low up-front cost.  ...  Our analysis of real-world traces shows that certain primary data sets can reside in the cloud with its working set cached locally, using a cloud gateway that acts as a caching bridge between local data  ...  We thank the members of the NetApp ATG group and ADSL research group for their suggestions and comments.  ... 
doi:10.1109/msst.2016.7897076 dblp:conf/mss/YangSUKFZAA16 fatcat:avvx4affuzfv3dwuajxnabqlp4
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