A Survey on Cloud Storage
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The Google File System (GFS)
The Google File System (GFS), as described by Ghemwat, Gobioff, and Leung in 2003, provided the architecture for scalable, fault-tolerant data management within the context of Google. These architectural choices, however, resulted in sub-optimal performance in regard to data trustworthiness (security) and simplicity. Additionally, the application- specific nature of GFS limits the general scalability of the system outside of the specific design considerations within the context of Google. SYSTEM DESIGN: The authors enumerate their specific considerations as: (1) commodity components with high expectation of failure, (2) a system optimized to handle relatively large files, particularly multi-GB files, (3) most writes to the system are concurrent append operations, rather than internally modifying the extant files, and (4) a high rate of sustained bandwidth (Section 1, 2.1). Utilizing these considerations, this paper analyzes the success of GFS’s design in achieving a fault-tolerant, scalable system while also considering the faults of the system with regards to data-trustworthiness and simplicity. Data-trustworthiness: In designing the GFS system, the authors made the conscious decision not prioritize data trustworthiness by allowing applications to access ‘stale’, or not up-to-date, data. In particular, although the system does inform applications of the chunk-server version number, the designers of GFS encouraged user applications to cache chunkserver information, allowing stale data accesses (Section 2.7.2, 4.5). Although possibly troubling -
A Review on GOOGLE File System
International Journal of Computer Science Trends and Technology (IJCST) – Volume 4 Issue 4, Jul - Aug 2016 RESEARCH ARTICLE OPEN ACCESS A Review on Google File System Richa Pandey [1], S.P Sah [2] Department of Computer Science Graphic Era Hill University Uttarakhand – India ABSTRACT Google is an American multinational technology company specializing in Internet-related services and products. A Google file system help in managing the large amount of data which is spread in various databases. A good Google file system is that which have the capability to handle the fault, the replication of data, make the data efficient, memory storage. The large data which is big data must be in the form that it can be managed easily. Many applications like Gmail, Facebook etc. have the file systems which organize the data in relevant format. In conclusion the paper introduces new approaches in distributed file system like spreading file’s data across storage, single master and appends writes etc. Keywords:- GFS, NFS, AFS, HDFS I. INTRODUCTION III. KEY IDEAS The Google file system is designed in such a way that 3.1. Design and Architecture: GFS cluster consist the data which is spread in database must be saved in of single master and multiple chunk servers used by a arrange manner. multiple clients. Since files to be stored in GFS are The arrangement of data is in the way that it can large, processing and transferring such huge files can reduce the overhead load on the server, the consume a lot of bandwidth. To efficiently utilize availability must be increased, throughput should be bandwidth files are divided into large 64 MB size highly aggregated and much more services to make chunks which are identified by unique 64-bit chunk the available data more accurate and reliable. -
Cloud Computing and Internet of Things: Issues and Developments
Proceedings of the World Congress on Engineering 2018 Vol I WCE 2018, July 4-6, 2018, London, U.K. Cloud Computing and Internet of Things: Issues and Developments Isaac Odun-Ayo, Member, IAENG, Chinonso Okereke, and Hope Orovwode Abstract—Cloud computing is a pervasive paradigm that is allows access to recent technologies and it enables growing by the day. Various service types are gaining increased enterprises to focus on core activities, instead programming importance. Internet of things is a technology that is and infrastructure. The services provided include Software- developing. It allows connectivity of both smart and dumb as-a-Service (SaaS), Platform-as–a–Service (PaaS) and systems over the internet. Cloud computing will continue to be Infrastructure–as–a–Services (IaaS). SaaS provides software relevant to IoT because of scalable services available on the cloud. Cloud computing is the need for users to procure servers, applications over the Internet and it is also known as web storage, and applications. These services can be paid for and service [2]. utilized using the various cloud service providers. Clearly, IoT Cloud users can access such applications anytime, which is expected to connect everything to everyone, requires anywhere either on their personal computers or on mobile not only connectivity but large storage that can be made systems. In PaaS, the cloud service provider makes it available either through on-premise or off-premise cloud possible for users to deploy applications using application facility. On the other hand, events in the cloud and IoT are programming interfaces (APIs), web portals or gateways dynamic. -
F1 Query: Declarative Querying at Scale
F1 Query: Declarative Querying at Scale Bart Samwel John Cieslewicz Ben Handy Jason Govig Petros Venetis Chanjun Yang Keith Peters Jeff Shute Daniel Tenedorio Himani Apte Felix Weigel David Wilhite Jiacheng Yang Jun Xu Jiexing Li Zhan Yuan Craig Chasseur Qiang Zeng Ian Rae Anurag Biyani Andrew Harn Yang Xia Andrey Gubichev Amr El-Helw Orri Erling Zhepeng Yan Mohan Yang Yiqun Wei Thanh Do Colin Zheng Goetz Graefe Somayeh Sardashti Ahmed M. Aly Divy Agrawal Ashish Gupta Shiv Venkataraman Google LLC [email protected] ABSTRACT 1. INTRODUCTION F1 Query is a stand-alone, federated query processing platform The data processing and analysis use cases in large organiza- that executes SQL queries against data stored in different file- tions like Google exhibit diverse requirements in data sizes, la- based formats as well as different storage systems at Google (e.g., tency, data sources and sinks, freshness, and the need for custom Bigtable, Spanner, Google Spreadsheets, etc.). F1 Query elimi- business logic. As a result, many data processing systems focus on nates the need to maintain the traditional distinction between dif- a particular slice of this requirements space, for instance on either ferent types of data processing workloads by simultaneously sup- transactional-style queries, medium-sized OLAP queries, or huge porting: (i) OLTP-style point queries that affect only a few records; Extract-Transform-Load (ETL) pipelines. Some systems are highly (ii) low-latency OLAP querying of large amounts of data; and (iii) extensible, while others are not. Some systems function mostly as a large ETL pipelines. F1 Query has also significantly reduced the closed silo, while others can easily pull in data from other sources. -
A Study of Cryptographic File Systems in Userspace
Turkish Journal of Computer and Mathematics Education Vol.12 No.10 (2021), 4507-4513 Research Article A study of cryptographic file systems in userspace a b c d e f Sahil Naphade , Ajinkya Kulkarni Yash Kulkarni , Yash Patil , Kaushik Lathiya , Sachin Pande a Department of Information Technology PICT, Pune, India [email protected] b Department of Information Technology PICT, Pune, India [email protected] c Department of Information Technology PICT, Pune, India [email protected] d Department of Information Technology PICT, Pune, India [email protected] e Veritas Technologies Pune, India, [email protected] f Department of Information Technology PICT, Pune, India [email protected] Article History: Received: 10 January 2021; Revised: 12 February 2021; Accepted: 27 March 2021; Published online: 28 April 2021 Abstract: With the advancements in technology and digitization, the data storage needs are expanding; along with the data breaches which can expose sensitive data to the world. Thus, the security of the stored data is extremely important. Conventionally, there are two methods of storage of the data, the first being hiding the data and the second being encryption of the data. However, finding out hidden data is simple, and thus, is very unreliable. The second method, which is encryption, allows for accessing the data by only the person who encrypted the data using his passkey, thus allowing for higher security. Typically, a file system is implemented in the kernel of the operating systems. However, with an increase in the complexity of the traditional file systems like ext3 and ext4, the ones that are based in the userspace of the OS are now allowing for additional features on top of them, such as encryption-decryption and compression. -
Overview of Cloud Storage Allan Liu, Ting Yu
Overview of Cloud Storage Allan Liu, Ting Yu To cite this version: Allan Liu, Ting Yu. Overview of Cloud Storage. International Journal of Scientific & Technology Research, 2018. hal-02889947 HAL Id: hal-02889947 https://hal.archives-ouvertes.fr/hal-02889947 Submitted on 6 Jul 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Overview of Cloud Storage Allan Liu, Ting Yu Department of Computer Science and Engineering Shanghai Jiao Tong University, Shanghai Abstract— Cloud computing is an emerging service and computing platform and it has taken commercial computing by storm. Through web services, the cloud computing platform provides easy access to the organization’s storage infrastructure and high-performance computing. Cloud computing is also an emerging business paradigm. Cloud computing provides the facility of huge scalability, high performance, reliability at very low cost compared to the dedicated storage systems. This article provides an introduction to cloud computing and cloud storage and different deployment modules. The general architecture of the cloud storage is also discussed along with its advantages and disadvantages for the organizations. Index Terms— Cloud Storage, Emerging Technology, Cloud Computing, Secure Storage, Cloud Storage Models —————————— u —————————— 1 INTRODUCTION n this era of technological advancements, Cloud computing Ihas played a very vital role in changing the way of storing 2 CLOUD STORAGE information and run applications. -
Enhancing Bittorrent-Like Peer-To-Peer Content Distribution with Cloud Computing
ENHANCING BITTORRENT-LIKE PEER-TO-PEER CONTENT DISTRIBUTION WITH CLOUD COMPUTING A THESIS SUBMITTED TO THE FACULTY OF THE GRADUATE SCHOOL OF THE UNIVERSITY OF MINNESOTA BY Zhiyuan Peng IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE Haiyang Wang November 2018 © Zhiyuan Peng 2018 Abstract BitTorrent is the most popular P2P file sharing and distribution application. However, the classic BitTorrent protocol favors peers with large upload bandwidth. Certain peers may experience poor download performance due to the disparity between users’ upload/download bandwidth. The major objective of this study is to improve the download performance of BitTorrent users who have limited upload bandwidth. To achieve this goal, a modified peer selection algorithm and a cloud assisted P2P network system is proposed in this study. In this system, we dynamically create additional peers on cloud that are dedicated to boost the download speed of the requested user. i Contents Abstract ............................................................................................................................................. i List of Figures ................................................................................................................................ iv 1 Introduction .............................................................................................................................. 1 2 Background ............................................................................................................................. -
Tensorflow and Serverless Machine Learning with Google Cloud Platform
TensorFlow and Serverless Machine Learning with Google Cloud Platform Date: Out of 133 million new jobs to be created by 2022, the top ones will be in the areas of machine learning, artificial intelligence, and data science. Employees in these roles can command an annual salary of over $125,000. This full-day workshop will Friday, April 26, 2019 advance your existing skills in programming, SQL, and Linux and get you started on a portfolio project you can use in discussions with employers about job opportunities in Time : these high demand careers. 8:30 AM—5:30 PM Presented by Location: Carl Osipov, Co-Founder & CTO, Counter Factual .AI Volusia County Business Incubator Powered by UCF Workshop Objectives: Learn how to: 601 Innovation Way Identify business use cases for machine learning Daytona Beach, FL Build a machine learning model using TensorFlow, Python, and SQL 32114 Scale and deploy machine learning models using Google Cloud MLE RSVP: Productionize trained machine learning models as web services [email protected] Materials you will need in advance: The workshop will be conducted on Price: Google Cloud Platform (GCP) and will use GCP's infrastructure to run Ten- Incubator Clients: and sorFlow. All you will need is a reasonably powerful laptop running an up-to- Graduates Free date browser (preferably Chrome). Make sure that the laptop is well charged sponsored by Career in advance! Source Please call Kathy at: (386) 561-9750 Skills Prerequisites: You must have beginner level experience with pro- All Others: gramming using Python and SQL. You should also be comfortable with com- $295 mon Linux/UNIX shell commands. -
Cluster, Grid and Cloud Computing: a Detailed Comparison
The 6th International Conference on Computer Science & Education (ICCSE 2011) August 3-5, 2011. SuperStar Virgo, Singapore ThC 3.33 Cluster, Grid and Cloud Computing: A Detailed Comparison Naidila Sadashiv S. M Dilip Kumar Dept. of Computer Science and Engineering Dept. of Computer Science and Engineering Acharya Institute of Technology University Visvesvaraya College of Engineering (UVCE) Bangalore, India Bangalore, India [email protected] [email protected] Abstract—Cloud computing is rapidly growing as an alterna- with out any prior reservation and hence eliminates over- tive to conventional computing. However, it is based on models provisioning and improves resource utilization. like cluster computing, distributed computing, utility computing To the best of our knowledge, in the literature, only a few and grid computing in general. This paper presents an end-to- end comparison between Cluster Computing, Grid Computing comparisons have been appeared in the field of computing. and Cloud Computing, along with the challenges they face. This In this paper we bring out a complete comparison of the could help in better understanding these models and to know three computing models. Rest of the paper is organized as how they differ from its related concepts, all in one go. It also follows. The cluster computing, grid computing and cloud discusses the ongoing projects and different applications that use computing models are briefly explained in Section II. Issues these computing models as a platform for execution. An insight into some of the tools which can be used in the three computing and challenges related to these computing models are listed models to design and develop applications is given. -
Security of Cloud Computing in the Iot Era
future internet Article Cyber-Storms Come from Clouds: Security of Cloud Computing in the IoT Era Michele De Donno 1 , Alberto Giaretta 2, Nicola Dragoni 1,2 and Antonio Bucchiarone 3,∗ and Manuel Mazzara 4,∗ 1 DTU Compute, Technical University of Denmark, 2800 Kongens Lyngby, Denmark; [email protected] (M.D.D.); [email protected] (N.D.) 2 Centre for Applied Autonomous Sensor Systems Orebro University, 701 82 Orebro, Sweden; [email protected] 3 Fondazione Bruno Kessler, Via Sommarive 18, 38123 Trento, Italy 4 Institute of Software Development and Engineering, Innopolis University, Universitetskaya St, 1, 420500 Innopolis, Russian Federation * Correspondence: [email protected] (A.B.); [email protected] (M.M.) Received: 28 January 2019; Accepted: 30 May 2019; Published: 4 June 2019 Abstract: The Internet of Things (IoT) is rapidly changing our society to a world where every “thing” is connected to the Internet, making computing pervasive like never before. This tsunami of connectivity and data collection relies more and more on the Cloud, where data analytics and intelligence actually reside. Cloud computing has indeed revolutionized the way computational resources and services can be used and accessed, implementing the concept of utility computing whose advantages are undeniable for every business. However, despite the benefits in terms of flexibility, economic savings, and support of new services, its widespread adoption is hindered by the security issues arising with its usage. From a security perspective, the technological revolution introduced by IoT and Cloud computing can represent a disaster, as each object might become inherently remotely hackable and, as a consequence, controllable by malicious actors. -
5 Steps to Prepare Your Network for Cloud Computing
VIAVI Solutions White Paper 5 Steps to Prepare Your Network for Cloud Computing To the novice IT manager, a shift to cloud computing may appear to offer great relief. No longer will their team have to worry as much about large infrastructure deployments, complex server configurations, and troubleshooting complex delivery on internally-hosted applications. But, diving a little deeper reveals that cloud computing also delivers a host of new challenges. Through cloud computing, organizations perform tasks While providing increased IT flexibility and potentially or use applications that harness massive third-party lowering costs, cloud computing shifts IT management computing and processing power via the Internet priorities from the network core to the WAN/Internet cloud. This allows them to quickly scale services and connection. Cloud computing extends the organization’s applications to meet changing user demand and avoid network via the Internet, tying into other networks to purchasing network assets for infrequent, intensive access services, applications and data. Understanding computing tasks. this shift, IT teams must adequately prepare the network, and adjust management styles to realize the promise of cloud computing. Shift in Management Focus With internal hosting, management LAN Switch focuses on the connection between Server Farm Client the LAN and Server Farm. Embracing cloud computing shifts the focus toward the WAN connection. WAN/Internet Internal Hosting Cloud Computing Cloud Provider Cloud computing shifts IT management significantly impact the decisions you make from whether your monitoring tools adequately track priorities from the network core WAN performance to the personnel and resources to the WAN/Internet connection. you devote to managing WAN-related issues. -
Cloud Computing Bible Is a Wide-Ranging and Complete Reference
A thorough, down-to-earth look Barrie Sosinsky Cloud Computing Barrie Sosinsky is a veteran computer book writer at cloud computing specializing in network systems, databases, design, development, The chance to lower IT costs makes cloud computing a and testing. Among his 35 technical books have been Wiley’s Networking hot topic, and it’s getting hotter all the time. If you want Bible and many others on operating a terra firma take on everything you should know about systems, Web topics, storage, and the cloud, this book is it. Starting with a clear definition of application software. He has written nearly 500 articles for computer what cloud computing is, why it is, and its pros and cons, magazines and Web sites. Cloud Cloud Computing Bible is a wide-ranging and complete reference. You’ll get thoroughly up to speed on cloud platforms, infrastructure, services and applications, security, and much more. Computing • Learn what cloud computing is and what it is not • Assess the value of cloud computing, including licensing models, ROI, and more • Understand abstraction, partitioning, virtualization, capacity planning, and various programming solutions • See how to use Google®, Amazon®, and Microsoft® Web services effectively ® ™ • Explore cloud communication methods — IM, Twitter , Google Buzz , Explore the cloud with Facebook®, and others • Discover how cloud services are changing mobile phones — and vice versa this complete guide Understand all platforms and technologies www.wiley.com/compbooks Shelving Category: Use Google, Amazon, or