Who says disaster-tolerant: Universal for heathen disaster

Speaking of disaster, whether it managers, or industry experts, each has its own argument, the complex technology and ideas, to fight odd Dou Yan of the program and products, people like the smoke and mirrors, difficult to distinguish the pros and cons. But for users who need disaster relief, the first thing to figure out is what is disaster tolerance? What is the value of the disaster tolerance solution and how to choose the solution? And this, is also our starting point of this series of articles, see disaster, see Plan, cost and value, let the choice more calmly, more professional program.

China user disaster situation

In the chapter "who says disaster-tolerant Ⅰ", we discuss what is the history of disaster tolerance and disaster tolerance. Through the history of disaster tolerance, we can see that the whole disaster-tolerant technology is based on different needs, by a variety of different technologies combined with the development, and finally unified into an integrated form, why? Since disaster tolerance solves two problems, the first problem is that data is not lost and the second is application uninterrupted. Then the data is not lost, the application of uninterrupted, is our business needs? Is it a requirement for the IT environment? So, when it comes to universal disaster tolerance, we need to reflect on the question of whether there is a need for universal disaster tolerance.

Let's look at the disaster-tolerance situation of Chinese users. Market research shows that there are 70% of data disaster-tolerant users in China, but faced with the most basic backup solution, such as too long backup time, data recovery is not successful, etc. in this area, there are 80% of the application disaster-tolerant user demand, but the market provides most of the products are backed up without application disaster, Or there is application disaster and no backup, a truly integrated application can simultaneously solve the backup and application of disaster-tolerant products can meet and not be asked; all along, the traditional disaster disaster is a luxury, can afford to use very few users, in such a large demand of 90% of the users because of the cost is not controllable, and could not afford the traditional disaster.

In such a disaster everywhere in the IT environment, users are faced with the dilemma of not knowing how to choose disaster, or only backup, no choice disaster, or want to use disaster, but can not afford, this is the Chinese user's disaster-tolerant status quo.

For example, our IT administrators often face this situation, a few years ago purchased the server, has purchased the backup software, because the system replacement, the need to purchase new equipment, found that the original technology solutions can not meet the actual needs. Or, a few years ago, the business system had a small amount of data and a low load. There is no strong reliance on IT systems, backup can be a script backup to meet the needs, and now several systems and use, and all realize paperless, the business system can never be broken. But often disaster-tolerant systems have not been able to effectively keep pace with the entire business system.

Ii. Why Disaster Tolerance

Want to use disaster, but it is difficult to popularize, why?

Considering the above situation, IT administrators are determined to build an airtight disaster recovery system, but the problem has come, the market disaster-tolerant program so many, technology points so much, and the original investment in the engine room do not want to waste, then how to do?

Let's take a look at the construction of disaster-tolerant system. Three essential factors to be considered: value, cost and program. First, what kind of value can disaster tolerance create, IT system construction has its own law, the enterprise organization structure has it must follow the rules, disaster tolerance for IT system construction and organizational structure to bring what value, is to be considered one of the most essential elements; Secondly, how much cost of disaster tolerance, The initial cost is how much, the opportunity cost is how much, maintenance cost is how much; Finally, we have to choose what kind of scheme is the real disaster-tolerant program, the effective disaster-tolerant system should be in performance, management, technical indicators Rpo/rto/dro can achieve the best balance.

Iii. What value can be created

1> IT construction phase needs disaster tolerance

What value can disaster tolerance create? Let us first take a look at what stage it construction needs disaster, when it construction system can create value, the value of disaster tolerance will be correspondingly highlighted.

Everything has its basic law of development, it information construction is no exception, from the initial infrastructure stage, including the PC, server, network deployment, to the subsequent application construction phase, including OA, website, CRM, ERP, dedicated business systems and other applications, has successfully entered the operational and dimensional effectiveness of the construction phase, Includes security classes, acceleration classes, enhanced class systems, data protection and other applications, in this stage, the need for a large number of security products and solutions to ensure the operational effectiveness of complex applications, but also because of various types of irresistible accidents frequently, the side of the effectiveness of it operation and maintenance of the multidimensional necessity of construction, For users at this stage, the construction of disaster-tolerant systems has become an essential option, not an option.

From here we can see why disaster prevalence of one of the reasons, in the information behind the region, for the lack of access to the IT operational effectiveness of the construction phase of the users, there is no consideration of disaster tolerance system to the business value of the necessary, but in the more developed regions, this is not the main problem, They need to think more about the value of disaster-recovery systems for corporate organizations.

How 2> disaster tolerance can help the organization

What is the value of the disaster-tolerant system in the organization?

In the more developed areas of information, it construction projects will encounter what problems? The answer is to apply for a budget. For the information manager, if we want to deploy disaster-tolerant solutions, we have to convince the management decision team, the Finance department, why do we have to disaster-tolerant? How can we help the whole organization? In this persuasion process, need to have data support, have management support. Well, first of all, we need to know what the business is doing to the enterprise after deploying the disaster recovery system, and obviously, as we mentioned in the first one, the disaster-tolerance goal: to ensure that data are not lost and applied uninterrupted. So what can we do for business management?

If we can make this clear, policymakers are immediately able to consider whether or not to adopt the disaster-recovery plan. Because he can help the enterprise to establish the management responsibility, may guard against the risk and the accident and so on. So how do you understand management responsibilities? Assuming we don't have a disaster-tolerant system, maybe it's not part of the deal, and once it's set up, the dedicated IT department takes it. Then how to bear, how to assess, will be because of the disaster-tolerant system of the establishment of a great change.

Guard against risk, but can this risk be prevented? For our business it is necessary to think about one o'clock--how to ensure that this is a precaution, and how our disaster-tolerant system is to be supported. If our current disaster recovery is only providing a guarantee of RTO and RPO, without the mechanism of prior control, incident tracking and post analysis, there is no way to combine the management objectives of the enterprise, similar to our functional system, how to incorporate the functional system into the assessment system, How to take out the assessment data from the assessment system to evaluate the functional system, which is our disaster recovery system needs to improve, until now there is no such disaster-tolerant program can prove that with the organization's management objectives have a combination of value.

So, the real disaster-tolerant plan not only needs to serve the IT system construction, but also needs to serve the entire enterprise management, this also is it to the organization management value place, but now can achieve concurrently and GU disaster-tolerant plan few, this is also one of the reasons why disaster tolerance is difficult to popularize.

Iv. how much it costs to spend

1> What is the traditional 4S scheme

For disaster-recovery scenarios, it has been implemented in a iphone way from the outset, that is, to buy servers (server) First, to install the operating system (OS) and backup disaster Recovery Software (Software), and finally, if there are other storage requirements for large amounts of data, Additional storage hardware (Storage) is required to meet the data storage requirements, such a server + OS + Software + Storage Traditional 4S solution is a huge investment in terms of initial cost and later maintenance costs and even opportunity costs, For the majority of users, it is a threshold too high to match things.

What cost 2> spend on disaster tolerance

Let's take a look at the initial cost of the traditional 4S program, each link and process need to separate the purchase of products into a whole solution to solve the problem. For example, the traditional dual-machine high Availability program, is at least 2 manufacturers of products to ensure that the application is uninterrupted, a server manufacturer and a dual-computer software vendors; If you also need to ensure that the data is not lost, we need to deploy a separate backup software plus virtual belt Library, so that at least 3 vendors; Additional disk mirroring scheme to buy other manufacturers of products, remote disaster disaster also have to buy other manufacturers of products, and ultimately the construction of disaster tolerance system needs a pen to continue to invest in the initial cost.

For maintenance costs, because one link process of individual products and system configuration, the overall maintenance cost is very high, imagine, a set of disaster tolerance