Planning of data center migration

The leaders of the organization plan the of data center migration as part of the infrastructure delivery strategy.

If enterprises do not have professional knowledge and skills to plan, manage and execute data center migration projects effectively, it is an effective way to acquire external expertise by cooperation.
Design and implement a strong communication program at all stages of the project, often in contact with all affected public, and provide complete information.
The risk mitigation, migration, and retreat plans are developed through the use of the disaster recovery (DR) program.
The process of recording the whole project is constantly recorded and lessons and references are drawn up for future evaluation and closure.
This study examines the best practices of data center migration. This is not a comprehensive review of all the methods of migration. On the contrary, this is a best practice list to help business leaders succeed in the migration of data centers.
The migration of data centers is not just a infrastructure, but a shift from the A point to the B point. This is often a complex and dangerous project, and it is essential to have the right process and expertise. And making a perfect plan is crucial to the successful migration of the data center. However, if there is no suitable resource in the organization to make the right plan, we must combine these resources with the external resources, so that we can plan, manage and execute the transplant projects effectively. Enterprise leaders must prevent data center projects from causing adverse effects on business. They have to ensure that applications and services continue to run properly to ensure that the downtime is the shortest and the performance will not decline.
Most successful data center migration projects have similar practices, such as professional knowledge, preparation, management, execution, communication, and business alliances. The purpose of the study is not to study each of these practices in depth, but to provide a practical list of best practices. This is derived from many years of observation and summary of the practice of data center migration.

What does the website design backstage system build to pay attention to?

Website design, backstage management system also called B end product. Unlike the C products that we directly contact with Internet products, B terminal products are more like iceberg under the iceberg, carrying a lot of functions, data and business processes. It determines the foundation of the C end products and even affects the efficiency of the enterprise. What do you need to pay attention to in the background of setting up a backstage management system?

Do a product, need to clear the product positioning, that is, the user is who can meet the needs of this part of the user and what problems to solve.
First, the business process is the soul
B end products are closer to business. Familiarity with business is a prerequisite for a good B - end product.
Take e-commerce business system as an example, the source of goods has two dimensions, one is self-management, and one is the supply of merchants.
Business systems need to support businesses to sell goods and sell well. But behind this simple demand, it includes businesses need to enter, then publish goods, manage orders, deal with after-sale -- settlement of goods and payments -- Extraction of these complex processes.
If the backstage management system is regarded as a person. The business process is like a soul, which determines the form of the product.
Two. Low coupling of functional modules
According to the business process, some basic functional modules are derived from business management, commodity management, order management, logistics after-sale, payment settlement and account management. Each module also contains multiple menu functions.
Business management: include business registration landing, company information management, qualification certification, pay deposit. Commodity management: manage commodity brand category, publish commodity, commodity shelf, commodity shelf, commodity warehouse.
Order management: order view, abnormal order processing, and exchange document management.
Logistics after sale: logistics distribution setting, delivery management.
Payment settlement: settlement management, settlement details, reimbursement documents management, freight settlement management.
Account management: margin system, goods payment inquiry, account amount inquiries.
With the specific module, we can refine the specific menu function. With the growth of business and scale growth, some functional modules will be stripped to separate systems. Therefore, when designing functional modules, we need to pay attention to low coupling and reconfiguration day, so that we can migrate better. Many of the background products need to understand and even understand the technology, because the background system design, we need to refine each field, understand the database, table structure.
Three. The flow of data is blood
A product has two kinds of data: input data, the flow of data refers to the direction of the input data of the system, the source of the output data. The flow of data makes the product alive.
The background system is not a single existence, a merchant system interacts with the investment management system, product system, order system, payment system, financial system, logistics system, BI system, marketing system, advertising system, recommendation system, message center...
In product design, we need to know clearly that every function module interacts with the system, and the whereabouts and circulation of each single data involve the influence of related systems. In this way, the risk can be avoided. At the same time, the extensibility and extensibility of the controlled products are also extended.
The following points need to be paid attention to in the design of the backstage system.
1, the system is easy to understand.
A good and easy to use system can greatly improve the efficiency of the related staff and colleagues, and directly save time and cost.
2, the function module is low coupling.
Designing products that make the architecture of Internet products is growing very fast, iterative frequent, user growth is tens of thousands, maybe 35 months, the existing system has not meet the current business, and module division, good low coupling, whether in the iterative reconstruction, or data migration, will play great role.
3. Distribution of authority roles.
The background system is a data pool, the related workflow is assisted by a variety of roles or many departments, so the relevant privileged roles need to be well divided.
First create a role - and then assign permissions to the role, different roles, menus, and data permissions.
Create an account again - assign roles to the account. In this way, the user allocates the functional permissions.

Three main points of connection design of cooling system

The special design and quality testing of the cooling system must be completed in the early stage, ensuring the convenience of maintenance and the safety and reliability of the server.

According to the data, the PUE value of our machine room (power supply efficiency) is higher, with an average of 2.5 and above, except for the 44 percent of computer consumption, the refrigeration system alone accounts for 38 percent of total power.
So operators are taking great pains to fill the energy hole of the engine room.
Big data and the computer industry's giants are used or is testing a variety of different room cooling methods, including flat to the whole room move, built on such as Iceland, or where the temperature is relatively low in the northeast of our country.
All the techniques such as immersion liquid cooling, microfluidic cooling, water cooling and other technologies are also highly anticipated.
For most data center operators, however, these new technologies have many limitations.
Before these technologies can be popularized, conventional liquid cooling is still the most practical way of cooling energy.
On the one hand, the cooling efficiency of water cooling is much higher than that used in most data centers.
On the other hand, the late maintenance of the liquid cooling system generally requires only some cooling fluid, so the stability of the whole system depends on the reliability and safety of the pipeline.
In other words, as long as the pipeline and connector design and quality testing can be improved in the early stage, it can greatly reduce the problems encountered in the maintenance of the data center.
At the beginning of the upgrade of the engine room refrigeration system, operators should begin to consider the key and fragile link of pipeline joints.
Connect and disconnect the connector is an important part, because of the unqualified joints is likely to be produced in the process of actual operation and the repeated use of the cooling fluid leakage, resulting in electronic parts damaged and frequent maintenance cleaning, resulting in waste of resources.
And the design unreasonable connector can not fit with the demand of data center operation and maintenance, which leads to unnecessary trouble later.
Operator needs to be done in the prophase of joint compression resistance to chemical corrosion test, and observe the actual performance of the joint in the prototype test, and based on the computer room in architecture and space limitations to consider the custom design.
Design considerations for data center line connector
1. Material selection
The selection of pipeline connector material requires two aspects: chemical resistance and cost performance.
In the aspect of chemical resistance, the medium in the pipeline needs to match the material of the joint, so that the equipment can be protected and sustainable.
In some cases, the machine room may have some materials that are not suitable for liquid cooling, such as aluminum cold plate and brass joint.
And can use a sub subject is chrome plating, stainless steel, corrosion resistant materials such as glass fiber filled polypropylene to replace, and globe valve with complex geometrical design can use a wide range of heat-resistant, strong chemical resistance of polysulfone.
Considering the height of the joint surface with the required sealing performance, joint also can double seal design, equipped with low friction o-rings, and USES the epdm to achieve good sealing and chemical resistance, to further ensure the stability of the surface system.
From the perspective of value, data center operators are mostly used in the surface system used in the main body for the custom of the metal connector, because of its resistance to high temperature and high pressure, large flow, strong wear resistance characteristics conform to the data center module connected to equipment activities such as a quality requirements.
Custom metal joint use of mechanical processing, can be designed and manufactured in a short time out with different external dimensions, threaded connector specifications, port form, traffic, bespoke requests to meet different data center.
In fact, in low-pressure environment, high performance plastic is also a cost-effective choice.
Plastics are lightweight, stable, and polysulfone materials are no less resistant to chemical and abrasion than metals.
The connector of molding process can also realize one-piece end design, which can make the assembly time short and easy to install, thus achieving higher efficiency and lower maintenance cost.
2. Optimization operation
The liquid cooling system is very large, so the modularization of the system can be very convenient for maintenance, just to disconnect the problem module for maintenance.
Using fast and iterated connectors not only can achieve modularity, but also can improve staff efficiency by simplifying operation, making installation and maintenance of equipment more convenient.
In order to help the staff to implement one-handed operation, the joints need to be equipped with the thumb keys that meet the ergonomics of the human body, and can be automatically flipped open when disconnecting, without the traditional ball valve closing device to increase maintenance efficiency.
In order to further optimize operation, the joint can also add different color components in the manufacturing process are identified, provide clear visual cues for maintenance personnel, greatly reduce the system damage caused by the connection error and downtime.
The joint can also be coated with anti-skid soft plastic, which can be used to increase the impact resistance and prolong the service life of the connector.
Another important step to consider is the space left in the machine room for the water cooling module.
Joints can be specially designed to ensure that all thumbkeys can be pointed in one direction, which is both beautiful and maximized to meet the limited requirements of the space, without affecting the operation.
3. Safety and stability
One of the biggest challenges for the data center liquid-cooling pipeline is to ensure that no cooling droplets are leaking.
The traditional connector can not maintain a liquid residue when it is disconnected because it has a spring and other prominent parts and joint grooves.
To avoid residual cooled droplet caused by leakage of server racks fault, joint is with flat section and the external structure, and through the tests of high strength to achieve the quality of the resistance to high frequency repeatedly plug.
The integrated valves in the connector need to be designed with a specific design - for example, the quick action of a non-drip valve is more effective in preventing liquid dripping than the cone valve.
Axis has a certain tolerance valve can also greatly improve joint performance, to make the valve in the case of incomplete connection remains liquid without leak full circulation, so as to ensure the effective operation of equipment, protection of electronic equipment and data.

機房建置對環境的嚴格要求有哪些？

機房建置效勞目標均爲效勞器、交換機、路由器、存儲器等IT類設備，而數據中心機房在日常使用過程中環境因素是很重要的，數據中心機房的環境要求不僅關係到機房的正常運行和故障率，而且還關係到機房工作人員的身心健康，下面爲大家詳細解讀數據中心機房對環境的要求。

先說說說這數據中心機房的故障率和環境有什麼關係？
（1）一個是和灰塵含量有關，所以說機房提出一個潔淨度的要求，就是說咱們現在國標是規定大於等於0.5個微米的灰塵，每升不大於一萬八千克，如果換成英制的話，就是英制五十萬級這樣的標準，潔淨度的要求那麼嚴格，需要減少機器的鼓掌率，減少腐蝕的產生等等的原因。
（2）再有一個是腐蝕性氣體，腐蝕性氣體包括硫化物，氮氧化物，氮硫化物這些腐蝕性氣體；
（3）如果灰塵的含量比較高或者是腐蝕性氣體的含量比較高，包括沿海地區空氣中的鹽成分，或者是說這兩項都偏高，這種情況下，如果溼度再高的話，那麼故障率就比較高了。
數據中心對環境的嚴格要求有哪些？
（1）靜電：主機房內絕緣體的靜電電位不應大於lkV機房地面的靜電泄漏電阻和絕緣體的靜電電位也要符合相關的規定。
（2）噪聲：計算機系統停機時，機房內的噪聲在主機房中心處測試應小於6SdB(A)。
（3）照度：計算機機房在距地0.8m處，照度不應低於3001x，輔助房間照度不低於2001x。
（4）無線電干擾場強：在頻率爲0.15~1000MHz時不大於126dB。
（5）磁場干擾：磁場干擾場強不大於800A/m，也要按照規定的大小設置。
（6）地板振動加速值：在計算機系統停機條件下，主機房地板表面垂直及水平向的振動加速度值不應大於5OOmm/s。
（7）溫度、溼度：溫度和溼度必須被嚴格控制，以提供可連續運行的溫度和溼度範圍。
幹球溫度計：20℃~25℃(68F~77F)。
相對溼度：40%~50%。
最大露點：2l℃(69.8℉)。
最大變化速度：每小時5℃(9℉)。
（8）電阻：主機房地面及工作臺面的靜電泄漏電阻，應符合現行國家標準GE6650一1986《計算機機房用活動地板技術條件》的規定。
（9）污染物：遠離腐蝕氣體、易燃易爆物；
腐蝕氣體隨着新風吸入機房後會對計算機設備和人員健康造成危害，同時不潔淨的空氣也會對計算機設備的運行造成不利影晌，還會對機房內精密空調、新風機等的濾網等造成污染。

Problems to be considered before the of an enterprise data center migration

In the data center migration: the development trend of the digital transformation of the industry leading a trend which cannot be halted, there are two kinds of enterprises are faced with a clear choice: or the implementation of modern transformation and business migration, or missing things, artificial intelligence and machine learning, AR / VR, cloud computing, big data analysis, mobile technology development opportunities. Which business may therefore be interrupted or replacement.

The pressure of business transformation and modernization depends largely on the IT team. They are the gatekeepers of data centers, so they are also the key driving force for future opportunities and success of enterprises. As the modern data center infrastructure becomes "cloudy", its planning is crucial. When the era of modernization is coming, most enterprises are faced with their own internal implementation, or the difficult decision to cooperate with the outside third parties.
A new study commissioned by DELL EMC company Forrester has found that enterprises that realize data center modernization and business migration cost more than 4 million dollars on average than those from cloud computing providers. And these modernized enterprises take two years to complete the process and transfer the responsibilities of their IT staff to their aspects.
However, if the enterprise is planning to implement the process and migration of the modernization of the data center, it is important to have realistic expectations and clear strategies. The enterprise can consider the following aspects carefully:
(1) enterprise expectations
Although the data center infrastructure or operation team of an enterprise has its own thoughts on the speed of modernization and migration, these assumptions are often not verified by other stakeholders in the enterprise.
In order to ensure the consensus of team members' ideas and awareness, the team should consider the following questions:
What stakeholders do companies need to communicate with? What information does everyone in the team need? Companies need to identify those who need to participate, and ensure their support for modernization and migration.
Who is responsible for project coordination and communication in an enterprise team? The person in charge needs the skills of the organization and managers to ensure that the plan is in place, and all the key stakeholders need to work together.
What is the tolerance for downtime? If the IT team estimates business migration will lead to downtime 12 hours, and in charge of the enterprise can only tolerate 4 hours of downtime, so enterprises need to reconsider the migration plan.
(2) expectation of resources
This transformation needs to be seen as a long-term process, and data center migration is a complex event that most IT departments rarely perform. The results of their execution will vary greatly, depending on whether the enterprise is to choose to do it yourself or to seek the help of the supplier.
According to the research of Forrester company, if the company chooses to cooperate with the supplier, it can shorten its implementation time by 40%. The migration will be completed earlier, and the enterprise will run the data center at less actual cost. Enterprises also need to consider which resources can be invested in this change.
Before data center migration starts, enterprises need to map the dependencies between all applications, servers and infrastructures, so as to ensure that they check all resources and create clear strategies.
(3) schedule
Large enterprises may have multiple enterprise level data centers, which means that thousands of servers and hundreds of applications are keeping their business running. However, there is only a short downtime in the implementation of migration. Stakeholders of the business need to tolerate this, and businesses may not have enough time to complete the complete migration of all tasks at once.
Instead, the migration plan should divide the process into several stages, and divide the work according to the granularity of application environment, the granularity of data or information, or the order of application upgrading. For example, an enterprise can give priority to an upgraded application or system.
(4) from the A point to the B point
Of course, the modernization and migration of data center projects may require the purchase and replacement of new hardware, and the need to build new data center facilities. Enterprises need to ensure that the following points are considered:
Have you considered the environment needed in the new facility?
When can the enterprise's new facilities and environment be enabled?
Do businesses need temporary equipment to migrate applications and environments in order to use new devices in the future?
If enterprises migrate their business from locally deployed data centers to the cloud, or migrate between clouds, or have a cloud infrastructure, another layer of risk is also needed to consider. Compared with the data center environment deployed locally, IT teams usually have low visibility to public cloud applications and resources, which makes migration planning and execution more difficult. It is essential to assess the process of meeting the cloud applicability of business and technical requirements.
(5) supplier commitment
Since the modern data center not only involves updated hardware, it is necessary to include third party software providers into the workflow from the very beginning, and we need to ask the following questions.
If an enterprise has problems in the process of migration, is the supplier willing to provide support?
What are the suggestions for vendors to upgrade the software before or after the migration of the data center?
When the migration is implemented, are the products or services supplied by the third party available?
Enterprises need to ensure that their suppliers provide a support plan to ensure that there is a reliable strategy to solve potential problems before migration.

Website design: is the design of a mobile site important?

Website design: the society has been striding forward in a progressive posture. Yesterday, whether our effective way has the same effect on today, we don't know, but the new big data ecosystem can help you see more things we can't see. Love what, for what the user is interested in, what is not an age of interest, we can see more things from it, thus better according to their own to recommend to a more suitable for their users, places of interest, we can make more changes.

According to the analysis of Internet data, mobile users now have more browsing than the PC side, because we carry them every day, so that we can get information, so mobile browsing is more than PC access. For many users, the frequency of the user's mobile phone is significantly higher than the user who usually likes to go to the computer. Use it to watch the news, search, find the information we want, is not difficult, because he and computer have the same number of functions, to say where the poor, I am afraid that computer screen than the mobile phone, through to more convenient, more convenient search, but to say the real convenience then, the mobile phone is certainly occupy a very large advantage, we may not have the computer, but we must have a mobile phone.
From the above point of view we can see, whether it is necessary for mobile phone website, this will be according to the customer demand, if you want to be more convenient for customers to search, or to give customers a better experience, then the mobile phone website is really what you need marketing.
What I want to point out is that the ranking of mobile website is different from that of PC website. The search engine gives users different rankings, and what is affirmative is that when searching for business on mobile phones, it is sure that the ranking of mobile websites is more dominant.
What the user needs is what we offer, and this has always been the truth of the survival of every industry. When we wait and see, there are already businesses in action. If he is your colleague, then occupy the leading edge. Your hesitation is your biggest loss.
I believe a qualified entrepreneur, strategic vision must be seen farther in the overall situation, accurate to have very good planning details, from which we can easily see that the mobile Internet is a kind of trend, want to let the enterprise obtain more exposure, mobile phone website construction is indispensable.
Mobile phone + network can communicate all over the world!

UPS不斷電系統的蓄電池監控與管理

儘管鋰離子電池技術正日益普及，閥控式鉛酸（VRLA）蓄電池仍然在當今數據中心的UPS供電系統的應用更爲廣泛。

但是，必須採用一個適當的電池監控策略進行管理，以最大限度地延長其使用壽命，並確保在電池損壞之前檢測，並改善不利的環境或操作條件。
閥控式鉛酸（VRLA）蓄電池仍保持其主導地位，因爲仍然被認爲是大多數應用中最安全、最可靠、最具成本效益的技術。
然而，閥控式鉛酸（VRLA）蓄電池的可靠性取決於在合適的環境中運行，並在整個工作壽命期間正常工作。
因此，UPS供電系統的擁有者有必要構建一個電池監控系統，或聘請第三方（如UPS供應商）提供遠程電池監控服務。
這將減少或消除UPS需要時電池失效的可能性，同時還優化了電池的使用壽命。
例如，行業廠商推出的產品可以提供基於網絡的服務，可以依次檢查每個電池的內部電阻、溫度，以及電壓。
它能夠通過調整電池組的充電電壓來校正單個電池在不同的充電時產生的均衡問題。
適當的均衡可防止充電不足、硫酸鹽化，以及容量損失問題。
監測也提供了其他好處。
通過發現過度充電，可以防止氣體泄露，乾燥，熱失控和腐蝕。
電阻測試結果的趨勢可以提供受損或弱化電池組的預警。
這樣可以及時更換電池組，從而改善整個電池系統的壽命。
無論如何，通過將所有電池持續保持在理想的電壓範圍內，電壓實現均衡可將延長30％使用壽命，消除了不正確的充電電壓和電流而產生的負面影響。
監控系統通常會顯示電池狀態，並記錄電阻、溫度、電壓的任何變化。
通過對用戶界面的持續監控和定期的報告生成，運營商可以優化電池性能和可靠性。
電池監測的好處如下：
通過均充延長電池壽命。
監控並調節電池充電過程，避免充電不足。
找出電池出現故障前的問題。
單獨監控每個電池的狀態，包括溫度。