In recent years, with the rapid development of the Internet and mobile Internet, new technologies such as big data, cloud computing, artificial intelligence, and Internet of Things have also ushered in a broad space for development. Last year, Alibaba Cloud Industrial Internet National Headquarters was officially opened in Guangzhou. Alibaba Cloud will cooperate with local partners in Guangdong to create an industrial brain that serves the whole country. In September last year, Huawei and Baiyun District signed a strategic cooperation agreement for cloud computing industry, which will jointly create a new generation information industry cluster of 100 billion yuan.
Since its birth, cloud computing has become a mature network information technology. Under the current artificial intelligence boom, cloud computing will incorporate more artificial intelligence, bringing profound technology to smart cities, public affairs, enterprises, and the general public. change. In the past decade, the world's major technology companies have also rushed into the cloud. In recent years, Chinese companies such as Alibaba, Tencent, and Huawei have actively deployed to “go to the sea†and compete with Amazon, Microsoft and other giants for overseas markets.
Cloud industry has settled in GuangzhouSome people in the industry understand the analogy: just like the transition from the old single-generator mode to the centralized power supply mode of the power plant, cloud computing allows computing power to be transmitted and circulated as a commodity over the Internet, becoming like gas, hydropower. The same, easy to use, low cost.
The initial goal of cloud computing is to manage resources. The main management areas are computing resources, network resources, and storage resources. In general, cloud computing is divided into three levels of services: infrastructure-level services (IaaS), platform-level services (PaaS), and software-level services (SaaS). The so-called hierarchy here is the "level" in the sense of a layered architecture. IaaS, PaaS, and SaaS are implemented on the infrastructure layer, the software open operation platform layer, and the application software layer.
With the help of a new wave of artificial intelligence, enterprises have become the trend of the times, and the creation of cloud ecosystem has become the top-level construction goal of the cloud industry. Earlier, China's Ministry of Industry and Information Technology compiled and issued the "Three-Year Action Plan for Cloud Computing Development (2017-2019)", proposing to expand the scale of China's cloud computing industry from 150 billion yuan in 2015 by 2019. To 430 billion yuan, cloud computing has significantly improved its application level in many fields such as manufacturing and government affairs, and has become an important form of information construction and an important support for building a network power and manufacturing power.
In September last year, Guangzhou Baiyun District Government and Huawei jointly signed a strategic cooperation agreement for cloud computing industry. In the future, it will cooperate to build a new generation information industry cluster of 100 billion yuan in Baiyun District, mainly building a “three centers and one platformâ€. Among them, “three centers and one platform†refers to cloud computing data centers, cloud industry operation centers and innovation display centers, and cloud industry development platforms.
At present, Huawei's main business includes three categories: private cloud for large and medium-sized enterprises, government cloud for China and the world, and standard public cloud. It is understood that Dongfeng Group is building a hybrid cloud for the future based on Huawei Cloud, realizing an automated unified cloud management platform, and building a collaborative office system on the cloud. More than 300 cloud hosts have been deployed, supporting more than 50 projects simultaneously. Stable operation and tens of thousands of user access, and reduce the overall IT cost of the group by 30%.
Targeting the South China market, not just Huawei Cloud. In November last year, Alibaba Cloud announced that it would set up Alibaba Cloud Guangdong R&D Center to recruit 1,000 cloud computing and artificial intelligence engineers to promote the integration of cutting-edge technology and Guangdong industry. In the manufacturing field, Ali will build its industrial Internet cloud platform in Guangdong, and set the national industrial cloud headquarters in Guangzhou, based on the needs and scenarios of the enterprise, to re-engineer the ET industrial brain, with the goal of serving 100,000 manufacturing enterprises nationwide.
Alibaba's relevant person in charge said that the reason why the industrial cloud headquarters is placed in Guangzhou is to take advantage of Guangzhou's massive talent reserve. At the same time, Guangdong is a strong province and a major economic province in China. If it can bring Guangdong's industrial enterprises If the service is good, it will be able to serve the national and even the global industry.
Wu Weigang, a professor at the School of Data Science and Computing at Sun Yat-Sen University, said: "For cloud computing, the general public's personal experience is not too deep, because many times the public access the website through the Internet to handle related business, but for government departments, enterprises, units, etc., they Putting some services on the cloud will make you feel different from the past."
It is precisely because cloud computing can effectively reduce the cost of government and enterprise back-end, and provide storage, service, and software applications, which is also suitable for the needs of start-ups. Last year, the "Microsoft Guangzhou Cloud and Mobile Application Incubation Platform" settled in Nansha, the first project of the global technology giant Microsoft and Guangzhou City. It is reported that among the first 18 entrepreneurial teams that have entered the incubation platform, “Guju†is based on Microsoft HoloLens mixed reality and Azure cloud platform technology, and independently developed the domestic leading VR home decoration design tool to provide a mixed reality experience scene. At present, Guju has obtained 20 million clouds of PRE-A, and the market valuation has reached 100 million yuan.
Microsoft said that it hopes that the "Guangzhou Cloud and Mobile Application Incubation Platform" can help an ideal and capable entrepreneurial team to win opportunities. Microsoft will cooperate with the “1+1+10†policy of the Nansha District Government to create an innovation platform and actively participate in multi-party cooperation to jointly promote talent cultivation, technological innovation and entrepreneurship.
In the next five years, Guangzhou will focus on the development of a new generation of information technology industry in the life cycle of key software products and solutions in the emerging fields such as industrial Internet, cloud computing, big data, mobile Internet, and Internet of Things, and promote a new round of software industry development. Encourage the development of platform-based enterprises and platform-based industries, accelerate the cultivation of new formats and new models, and form a coordinated development pattern of “platform, data, applications, services, and securityâ€.
The wave of digital transformation is sweeping the globe, and China is one of the most active markets embracing digital transformation. According to IDC, in 2021, digital products and services based on digital technologies such as cloud computing, mobile computing, Internet of Things, and artificial intelligence will account for 65% of China's GDP and contribute 1% to China's GDP. , valued at $716 billion.
A Small Computer System Interface (SCSI) connector, also pounced as [scuzzy" connector, is used for physically connecting and transferring data between computers and peripheral devices.
SCSI is the small computer system interface, which is an independent processor standard used for the system level interface between computer and intelligent devices (hard disk, floppy, optical drive, printer, scanner, etc.). It is an intelligent universal interface standard, which has the function of communicating with various types of peripherals. SCSI uses the standard software interface of ASPI (SCSI programming interface) to make the driver communicate with the SCSI adapter installed inside the computer. SCSI interface is widely used in high-speed data transmission technology on minicomputers. SCSI interface has many advantages, such as wide application range, multitask, wide bandwidth, low CPU utilization, and hot plug.
SCSI connectors type and interfaces
Centronics 50-pin connector: The Centronics 50-pin connector was once the most widely used SCSI connector. An external connector only, the Centronics is a SCSI-1 connector that looks the same as the Centronics cable that attaches to a parallel port printer. The Centronics 50-pin cable comes in male and female styles, and gender changers and cable converters are commonly available. Although used on older SCSI devices and external drive enclosures, this interface is no longer heavily used, due to its slow speed and short cable lengths.
High-density 50-pin connector: The high-density 50-pin connector is used on scanners and Jaz drives. It is one of the more common SCSI connectors and is usually used to connect SCSI-2 devices. Both ends of the cable are usually 50-pin male, while the sockets on the host adapter and external devices are 50-pin female.
DB 25-pin connector: The DB 25-pin or D Sub 25 is by far the most widely used connector. This connector is used for parallel and serial printers in addition to the many other devices available. Both ends of the cable are usually 25-pin male, while the sockets on the host adapter and external devices are 25-pin female. This cable is almost always an external connector.
Note: DB-25 SCSI CABLES are not compatible with and should not be used as serial or printer cables; serial cables and printer cables should not be used or attached to DB-25 SCSI adapters. You can short out the SCSI host adapter or the motherboard by using the wrong cable. Marking cables is the best way to avoid this.
IDC50 connector: The IDC50 is the most common internal SCSI connector. It is very similar to the standard IDE internal ribbon cable. The IDC50 SCSI cable is considerably wider then an IDE ribbon cable; in fact, it is usually the widest standard internal cable in use. This is a standard SCSI-2 10MBps internal SCSI cable. Many low-end cables have only two or three connectors, allowing for one or two devices to be attached to the cable. Seven-device cables are available, though they are often expensive and require a large case, as the cables may be four or five feet long.
High-density 68-pin connector: The high-density 68-pin connector is the SCSI connector of choice for SCSI-3 host adapters and peripherals. There is an internal ribbon cable version that looks very similar to the IDC50 connector. Many low-end cables have only two or three connectors, allowing for one or two devices to be attached to the cable. Seven-device cables are available, though they are often very expensive and require a large case, as the cables may be three or more feet long. Both ends of the external cable are usually 68-pin male, while the sockets on the host adapter and external devices are 68-pin female.
SCA 80-pin Micro-Centronics connector: SCA stands for Single Connector Attachment, a type of disk drive connector that includes connection pins for the power cables as well as the data wires. A SCA connector uses an 80-pin plug and socket to connect peripherals. This connector combines power, data channel, and ID configuration for fast installation and removal. SCA connectors are typically found only on high-end SCSI hard disks. The SCA interface was designed to provide a standard connection for systems using drives that can be hot-swapped. SCA makes swapping SCSI hard drives much easier than with traditional SCSI cables, plugs, and sockets. An adapter enables SCA drives to fit into standard SCSI enclosures.
SCSI SFF 8482: Also called "4x internal" by some vendors. This is a connector with the same form factor as SATA with the addition of a "bump" to key it specifically for SAS. (SATA drives can be plugged into SAS controllers, but SAS drives will not function with a SATA controller; hence, the necessity for the key bump on the connector.) As the name says, it's meant to be used internally, i.e., inside the computer case.
SCSI SFF 8484: Also called "32-pin" or "MultiLane". This is a high density connector usually intended to plug into the motherboard, controller, or backplane itself. Cables with this connector on one end usually have four individual SFF 8482 connectors on the other.
Serial Attached SCSI SFF 8470: Also called "4x external" by some vendors. This is simply a version of the SFF 8484 that's meant to be used with external (i.e., not located within the case) drives.
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