Hot Backup Server

The advent of the 4G era, enterprise data faced with explosive growth, mobile TB; At the same time, human factors, software defects, uncontrollable natural disasters and other security problems occur frequently, how to make the enterprise data security and reliable, low-cost and efficient long-term preservation, has become an urgent concern for any enterprise. Fortunately, the cloud era accompanied by the 4G era, the core advantages of cloud computing: cost-effective, resource allocation, infrastructure flexibility, business smooth switching, bandwidth and storage unlimited expansion features. Multi-backup cloud backup, cloud recovery, cloud archiving and other special ...

Refer to Hadoop_hdfs system dual-machine hot standby scheme. PDF, after the test has been added to the two-machine hot backup scheme for Hadoopnamenode 1, foreword currently hadoop-0.20.2 does not provide a backup of name node, just provides a secondary node, although it is somewhat able to guarantee a backup of name node, when the machine where name node resides ...

Now almost any application, such as a website, a web app and a mobile app, needs a picture display function, which is very important for the picture function from the bottom up. Must have a forward-looking planning picture server, picture upload and download speed is of crucial importance, of course, this is not to say that it is to engage in a very NB architecture, at least with some scalability and stability. Although all kinds of architecture design, I am here to talk about some of my personal ideas. For the picture server IO is undoubtedly the most serious resource consumption, for web applications need to picture service ...

Because of the lack of enterprise-class product contact to understand, many users, a contact server, Web page production, such as office information preparation, can not help but some confused. 　　Not only that, the current chaotic medium and low-end server market also allows buyers to sigh, especially true and false server discrimination often let these laymen overwhelmed. With the continuous deepening of the server differentiation and information process, the development of small and medium-sized enterprises can not be separated from the construction of local area network, server and other basic information needs. But at the same time, most of the small and medium-sized server requirements are general, performance requirements are also very general, so manufacturers needle ...

&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; The so-called Blade server (which is precisely called a blade server) means that multiple, modular server units can be plugged into a standard, rack-mounted chassis to achieve high availability and high-density. Each "blade" is actually a system motherboard. They can be launched from the "onboard" hard drive.

In order to improve the performance and workload of the server, enterprises usually use DNS server, network address translation technology to achieve multiple server load balancing, especially the current enterprise external Internet Web site, many are through several servers to complete the server access load balance. The current enterprise uses the so-called "load balancing server", in fact it is a control server of the application system, all users request first to this server, and then the server according to the actual processing server-like ...

In recent years, the server market is the most popular http://www.aliyun.com/zixun/aggregation/9785.html "> server architecture than the blade server, it appears in a large number of media, Major manufacturers have also launched a variety of corresponding models. What advantages does a blade server have over a traditional server? What should consumers choose when choosing a server? This paper compares the blade server with the traditional rack-type server, and introduces the experience of the two in the selection.

Intermediary transaction SEO diagnosis Taobao guest Cloud host technology Hall Do you have vital data on your computer and do not want them to fall into the hands of the wicked? Of course, they are entirely possible. And, in recent years, servers have been more exposed than ever. More and more viruses, malicious hackers, and commercial spies are targeting servers. 　　Obviously, the server security problem is not to be ignored. It is not possible to talk about all the computer security issues in just one post. After all, about this ...

Server virtualization can achieve physical server integration, breaking the original "one server one application" mode. By sharing hardware resources among a large number of virtual machines, the utilization of hardware resources is increased, the number of physical servers is reduced, and hardware procurement and running costs are reduced. This article explores the benefits of server virtualization and the security risks of deploying secure servers. 1. Introduction with the development of IT technology, virtualization has become the hottest topic in the enterprise computing market. In the past two years, the virtualization technology has been developed continuously, product application scope is more and more wide, domestic users through ...

July 14 News, 11th from 2 o'clock in the afternoon to 12th 4 o'clock in the afternoon, the Art Dragon Travel Network has continued to visit the fault. It is understood that the event was initially an EMC storage device failure, and because the Art Dragon network's storage structure is not perfect, resulting in a long time cannot be repaired. The incident has sparked a lot of discussion in the area of the Internet industry's system architecture, Art dragon because of this downtime, its Web services and call center business can not be carried out, according to some media calculations, art Dragon net this direct loss of more than 147,000 operating income, and its customers caused by the potential impact can not be estimated. EMC stores ...