Do you know the word “replace”? This is a term used in the IT field, and refers to the work of replacing existing systems and software with new ones. For example, replacement is sometimes used in companies to introduce a system different from the existing one in order to strengthen security.
Although it is not a well-known word in general, given that IT has developed so much in modern times, it is often used in a surprising variety of situations, such as updating systems and strengthening security measures. is. In this article, we will explain the overview of Replace, the purpose of implementing it, and how to proceed when actually performing it.
What is Replace?
Replace is a term commonly used in the IT field. First, I will explain the overview.
Replacing existing systems and software with new ones
Replacement refers to the process of replacing existing systems, software, etc. with new ones. “Replace” is an English word that means “to replace” or “to replace,” and refers to replacing a part or the whole of a system that has problems or is outdated. Masu.
In modern times, the web has developed extremely well, and IT is progressing at a rapid pace. As a result, systems tend to become obsolete at an early stage, leading to breakdowns and performance declines. Replacement is performed to solve such problems.
Difference from “migration”
A related word is “migration.” Migration is an English word that has meanings such as “migration” and “relocation,” and it means moving existing systems and data to a different environment or migrating them to a new
platform
.
Therefore, the difference is that migration involves changing the entire infrastructure, such as migrating an existing system to a new platform or system, whereas replacement simply replaces a system with a problem with a new one, and changes the platform, etc. No changes will be made to the underlying part.
Replacement is used when installing the same new software due to deterioration due to failure or damage, but there are also cases where an old system is updated to the latest version or when migrating to a new platform to introduce new technology. will be handled through migration.
Purpose of performing replacement
Replacing existing systems and software with new ones has great benefits for people who conduct business on the Web, so we do this with a purpose. The five main objectives are:
Dealing with performance degradation
As your business develops and the number of customers increases, data accumulates and becomes enormous. If the system remains outdated, it may not be able to withstand the enormous amount of data, and problems may occur such as the system becoming unable to process the data or becoming slow to operate. When problems occur and performance declines, it can lead to a decline in the work efficiency of your company’s employees. In order to prevent performance deterioration in advance, it is important to replace it and consider whether there are any problems with processing capacity.
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Responding to aging systems
As systems are used for many years, there are cases where the data usage capacity becomes insufficient and the processing capacity decreases. The purpose is also to improve the deterioration of the system’s work performance as it ages.
According to tax laws set by the National Tax Agency, the useful life of equipment such as
servers
is generally 5 years, PCs are 4 years, and purchased application software is 5 years. Therefore, in many cases, they are replaced within five years. In addition, software products often have a support period set by the manufacturer, and replacements are often carried out even after the support period has ended.
We recommend that you consider replacing aging hardware and software as soon as possible, as there are only a limited number of in-house personnel who can maintain them. If you postpone the issue of aging for reasons such as a lack of available human resources, you need to be careful because problems such as the end of support from the company providing the platform and other systems may occur. .
Responding to system black box
Systems that have been in use for many years can become complicated internal structures as they are repeatedly customized, turning them into black boxes.
A black box refers to a system that continues to operate in an unclear state, with the internal structure of the system becoming unclear and unable to be modified even if repairs are necessary. I say so. There are many cases where the engineers who were involved in the introduction and management of systems in a company retire, and there is no one who understands the contents of the system, resulting in the system becoming a black box.
Although I know that I have to somehow improve something that has become a black box, I don’t want to do anything because I am afraid that I will improve something that is unclear and may have a negative impact on the overall system. It’s difficult to put on. For this reason, many companies are likely to replace their products when the support period ends.
Improving security measures
Older software poses greater security concerns. Products that have been in use for many years and are no longer supported often no longer receive security updates. As a result, security has become lax, and there is a risk that it may become a target for unauthorized access or virus infection. Companies have customer data and other information that must never be leaked, but there are many cases where important information is leaked due to unauthorized access.
In order to have the best possible countermeasures, it is necessary to replace them regularly and update and improve the latest security.
Introduction of new technology
Today, digital technology is rapidly evolving, and systems using various technologies such as AI, IoT, and VR are being introduced into internal systems. There are many companies that utilize such systems to further improve operational efficiency and develop their businesses. In addition, an increasing number of companies are bringing about changes in their business by updating their data management systems to better ones and making effective use of it for
marketing
. By introducing new technology in this way, it can be utilized for business development.
4 ways to replace
When performing a replacement, there are mainly the following four methods.
It is important to select an appropriate method based on the current system situation and to implement it effectively. Here we will provide an overview of the four methods and how to choose one.
Bulk migration method
This is a method of replacing all the elements such as hardware and software that make up the system at once.
It can be implemented in a relatively simple process, and everything can be replaced at once, so the work only needs to be done once. This has the advantage of minimizing financial and time costs. Also, if you have had multiple problems in the past, replacing them will help you solve them all at once.
However, since it is necessary to replace them all at once, the entire system must be stopped during replacement. If the system is large, the downtime can be expected to be longer. Therefore, it should be considered difficult to use this method when it is necessary to keep it running all day long.
On the other hand, it may be an effective method if there is a schedule that allows for a complete shutdown, or if there is no problem with business operations by substituting something else. When using this method in companies, etc., please check the overall impact before using it.
Stage transition method
This is a way to switch parts of the system you are currently using to a new one. The advantage is that only parts of the system that are aging or have problems are selected, and the system is stopped for each part and switched in order, so there is no need to shut down the entire system. Masu. Since it is done part by part, it is unlikely to be large-scale, and the benefit is that each time it takes less time.
However, since switching is performed part by part, it tends to be more expensive and time-consuming than the all-in-one migration method. Additionally, if you migrate part by part, you will end up with a mixture of the original old system and the partially replaced new system, which can make configuration difficult. Please be careful as the old and new versions may not be compatible.
Parallel migration method
This is a method of running the currently used system and the new system in parallel for a certain period of time and performing verification while migrating. Since they are running in parallel, there is no need to stop the system. Another benefit is that even if you run into trouble when replacing with a new one, you can revert to the old one relatively easily.
However, since the two are running at the same time, the cost and management burden will be high. When planning, it is important to consider the burden on the operations personnel and those involved in the migration.
pilot method
A pilot method is a method in which one department switches from the system currently in use to a new system, operates it on a test basis, and after determining that it can be used without any problems, switches to the new system for all departments.
Since you can perform a test operation in a department that is least affected before switching the entire system, you can make the switch after resolving any concerns or controlling risks. Even if a problem occurs with the new system, it will lead to the accumulation of operational know-how. Once you have that know-how, you can start working on the actual project.
However, since it is necessary to conduct test operations, there will of course be costs and time costs involved.
Points to consider when choosing from the four methods
We have explained four methods, but it is necessary to select and implement the appropriate method based on the current situation. The points to consider when choosing from the four methods are as follows:
|
method |
point |
| Bulk migration method | It is possible to stop the entire current system for a certain period of time. |
| Stage transition method | There are multiple functions and data that need to be moved, but it is difficult to stop the current system for a long time. |
| Parallel migration method | It is difficult to stop the current system even temporarily |
| pilot method | I want to operate the system on a test basis, migrate after being satisfied with it, and utilize it to its full potential. |
5 steps to proceed with replacement
Replacing with a new one can improve performance and take security measures, but there is a risk of problems if you use the wrong migration method. It is important to proceed in the correct manner. From here, I will explain the basic procedure.
Determine the content of the replacement
First, it is important to decide on the content and requirements. It is necessary to analyze the existing system and identify issues, clarifying “what and how to change” and “what needs to be changed” before implementing the system.
When deciding on content and requirements, we recommend listening to opinions and requests not only from upper management and operations staff, but also from employees who are actually using the service.
planning
Once you have decided on the content and requirements, let them draw up a plan. It would be a good idea to keep the following points in mind when planning.
By drawing up a concrete plan and sharing it within your company, you can tackle it with thorough preparation.
Preparing migration data
Be sure to carefully check the data you want to transfer. Data that can be migrated as-is is fine, but if the specifications change after replacement, you may need to make adjustments to the data, so be careful. If a new system causes data to become unavailable or damaged, business operations may be disrupted. Be especially careful about important or confidential information.
Conducting rehearsals
Always rehearse before making a transition. By rehearsing in advance, you can check whether the work procedure you have in mind can proceed smoothly. Additionally, even if a problem occurs, you can prepare a solution so you can put that know-how to use in the actual production. Please rehearse, focusing mainly on the following points.
Implementation of replacement
Once the rehearsal is complete, let’s move on to the actual performance. Problems that didn’t come up during the rehearsal may arise, but try to calmly deal with them.
Points to note when replacing
In order to complete the replacement smoothly and without any problems, it is important to be aware of a few points and take proper precautions. Here we will explain some points to be careful of.
Correctly check the range affected by stopping the system
If you decide to stop the existing system, be sure to check the scope that will be affected by the stoppage.
If you replace your company’s systems without planning properly, you will only be taking measures for departments that will be directly affected, and you will not be taking measures for departments that will be affected indirectly, resulting in problems with business operations. There are many cases where this can cause problems.
If you do not plan properly, the entire company’s operations may come to a halt or have a negative impact on the company’s profits, so be sure to accurately confirm the scope of the impact at the time of planning. It is important to keep it.
Understand how it will work with existing systems
If you are linking another system to your existing system, make sure to check and understand whether it will work smoothly even after the replacement. There may be cases where the new system does not connect with the system you want to work with. If you switch to a new system without checking, you may find that the system cannot be linked after the switch, and you may end up wasting your money. For some companies, this could result in significant losses.
At the time of planning, check and understand questions such as “What systems are currently being linked?” and “Is it possible to link with new systems?” and implement in an appropriate manner.
Proceed in cooperation with vendors
When it comes to replacement, it is important that the company that owns and replaces the system takes the lead in cooperating with the contractor, rather than leaving everything up to the contractor because they “don’t understand it well.”
Unless companies that use new systems take the lead in the future, it will be difficult to achieve the ideal replacement that they seek. Make sure you plan, decide on a schedule, and think about the necessary functions before sharing them with your contractor. Based on this, it is important to incorporate the opinions of the vendors and convey your company’s requests and opinions.
Of course, you can leave the difficult parts to the contractor, but be sure to listen carefully and understand the details before leaving it to the contractor.
Don’t make reckless plans
In modern times, advances in
IT
have become quite rapid, and some companies, wanting to introduce new technology and the latest technology into their own company as quickly as possible, end up making reckless plans to introduce it. It is understandable that companies want to introduce better products because they want their company to develop, but there are limits to the resources that companies can use, such as the cost and time they can spend. Be careful, as reckless planning may actually hinder the implementation of the system.
Additionally, even if you have decided to replace or introduce a system, you need to be careful about the schedule and implementation method. Even if you want to implement it as soon as possible, if you do so without considering the company as a whole, there is a risk that your employees’ work will be disrupted if a problem occurs. After understanding the company as a whole, decide on the best replacement method.
We will make improvements after implementation.
After replacement, it is important not to expect perfect completion when going into operation. Even if you make a thorough plan and perform optimal replacements, there is a possibility that there will be changes to functionality or points you would like to add. Therefore, it is important to communicate to those in charge of operations, those involved in migration, and employees within the company so that there is a common understanding that improvements will be made even after the system goes live.
Issues when introducing a replacement
Although we replace the system we have been using to make it better, troubles and problems may occur during installation or actual operation.
schedule delay
One of the reasons why the actual implementation schedule is behind the planned schedule is a lack of communication between the company and the contractor. Even if a company makes a careful plan, it will not be able to proceed smoothly if the plan is not shared with contractors. Furthermore, if a company makes a plan alone, it is likely that the plan will be lax. By incorporating the opinions of professional contractors, you can create a more appropriate flow and increase common understanding between both companies, so you can prepare carefully in advance. As a result, you will be able to perform the actual work smoothly. Even if a problem occurs during the process, sharing information between the company and the contractor in advance will increase the likelihood that it can be resolved quickly.
Cooperation with existing systems
Many companies have multiple systems in place, such as sales management and customer management systems, which they operate on a daily basis. Therefore, it is necessary to successfully integrate these existing systems with newly introduced systems.
If systems become unable to cooperate with each other, each system will operate independently and the system will be used to improve work efficiency and simplify data management, but there will be no point in using it. It may disappear. This can have negative effects, such as increasing the burden on employees and increasing mistakes, so be sure to check for proper coordination at the time of implementation.
summary
In this article, we have explained the overview of Replace, the purpose of implementing it, and how to proceed when actually performing it. If you continue to use old software or black box systems with the idea that “it’s okay for now,” it could lead to major problems in the future. Companies need to be extremely careful as this could lead to incidents and information leaks on the web.
Replacement is not an easy task as there are various methods and precautions to be taken, but implementing it will lead to the future development of your company and business. Let’s try to implement it in the best way.