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A, virtualization virtualization refers to the ability to simulate multiple virtual machines on the same physical machine. Each virtual machine has a separate processor, memory, hard disk, and network interface logically. The use of virtualization technology can improve the utilization of hardware resources, so that multiple applications can run on the same physical machine with each other isolated operating environment. There are also different levels of virtualization, such as virtualization at the hardware level and virtualization at the software level. Hardware virtualization refers to the simulation of hardware to obtain a similar to the real computer environment, you can run a complete operating system. In the hardware virtual ...

Since ancient times heroes sad beauty Guan. The remarkable feats of heroes are obvious to all in the eyes of the world, but they cannot pass the "beauty". And now, like this, Google, Amazon and Microsoft, such as the International IT giants, once how powerful, but in the face of cloud computing "security", it seems to be helpless. From the day of the Birth of cloud computing services, frequent bursts of security incidents, so that users have some suspicious heart more uneasy. Just last month, Amazon, the cloud-computing services provider, broke out the biggest outage in prehistoric times. April 21 ...

At present the public cloud market price war smoke again, Google will cloud servers, cloud storage and database services prices cut 32%, 68% and 82% respectively; Amazon responded, the average price of storage services down 51%,EC2 calculation Services reduced by 38%, large data Services price reduction of 27% to 61%; Microsoft Azure has also been quick to follow, with cloud service prices down 27% to 35% and storage prices down 44% to 65%. The price of a memory-intensive Linux instance is reduced by 35%, while the price of Windows instances is reduced by 27%. Block journal storage Price ...

At present the public cloud market price war smoke again, Google will cloud servers, cloud storage and database services prices cut 32%, 68% and 82% respectively; Amazon responded, the average price of storage services down 51%,EC2 calculation Services reduced by 38%, large data Services price reduction of 27% to 61%; Microsoft Azure has also been quick to follow, with cloud service prices down 27% to 35% and storage prices down 44% to 65%. The price of a memory-intensive Linux instance is reduced by 35%, while the price of Windows instances is reduced by 27%. Block journal storage Price ...

Cloud storage products can be said to have thousands of species, can be said to be few, depending on the extent of the definition of cloud storage or how narrow. 　　Regardless of the scope of the definition, the number of cloud storage products is expected to increase this year, because the cloud storage has maintained a rapid momentum of development. The problem with cloud storage's definition of cloud storage is that there are so many in its infancy that there are divergent interpretations of the term. To make the definition of cloud storage clearer, industry analysts who often deal with corporate IT experts rearrange the definition of cloud storage, outlining some of the features of cloud storage ...

As cloud computing technology has become the main ' IT infrastructure ' for many business organizations, the market value will rise from $35 billion trillion in 2011 to $150 billion in 2020. Experts predict that cloud computing will become an important part of the enterprise computing infrastructure in 2020. Although cloud computing develops rapidly, the 2020 cloud computing domain will present the form will be different from now, but the outstanding cloud service form will still be able to retain and unceasingly improve, the following is the author analysis summary in 2020 still will present several kinds of cloud technology form. Open Cloud ...

This paper is an excerpt from the book "The Authoritative Guide to Hadoop", published by Tsinghua University Press, which is the author of Tom White, the School of Data Science and engineering, East China Normal University. This book begins with the origins of Hadoop, and integrates theory and practice to introduce Hadoop as an ideal tool for high-performance processing of massive datasets. The book consists of 16 chapters, 3 appendices, covering topics including: Haddoop;mapreduce;hadoop Distributed file system; Hadoop I/O, MapReduce application Open ...

OpenStack Object Storage (Swift) is one of the subprojects of the OpenStack Open source Cloud project, known as Object storage, which provides powerful extensibility, redundancy, and durability. This article will describe swift in terms of architecture, principles, and practices. Swift is not a file system or a real-time data storage system, which is called object storage and is used for long-term storage of permanent types of static data that can be retrieved, adjusted, and updated as necessary. Examples of data types that are best suited for storage are virtual machine mirroring, picture saving ...

"Editor's note" Docker and CoreOS are excellent "graduates" of the Silicon Valley incubator, and it is said that two bosses have a good personal relationship, Docker do container engines, CoreOS container management, cooperation is very happy, but with the release of Rocket gradually "parted". Although Docker and CoreOS are seeking "Jane", but Docker "Jane" is to strive to achieve the most convenient use of the user, CoreOS "Jane" is the pursuit of the ultimate lightweight, which will be the future of container technology, in fact, it is difficult ...

Sweep 18 Major databases: 12 species of sql+6 nosql remember that two or three years ago there were only a few cloud platform vendors to choose from, it seems that there is not much cloud database in the market. But after the cloud boomed, the cloud database also appeared to be springing up. And what is really reliable and easy to use, for users, and bad analysis. So, this paper analyzes the usability and application direction of 18 kinds of databases (note that the Management database service is not the database instance that still requires user management and implementation). There are still deficiencies, I hope to hear more ...