Chapter 1187 Understanding the System
Lao Long is a little confused about young people and the management system of information technology companies. He finds this kind of "superior-subordinate relationship" somewhat novel and interesting.
Zhou Zhi turned around and opened his arms: "Fox Cave, monk, hahaha, long time no see."
The visitors were Hu Lidong and Yang He. Hu Lidong reluctantly hugged Zhou Zhi After a while, he continued to emphasize: "Wang Gong is an engineering major, I can only count science."
Zhou Zhi was too lazy to pay attention to his entanglement on this, and hugged Yang He again: "Brother, are you used to it?"< br>
"It's okay." Yang He was actually a little excited, but he had a calm personality, and even someone like Zhou Zhi wouldn't be able to tell.
Zhou Zhi patted his back, and Yang He understood instantly. He wanted to deal with the current situation first.
After everyone was seated, Lao Long said: "Now the hardware transformation part of the building's informatization has been completed. The bureau is very satisfied with the preliminary work. Not only does it maintain quality and quantity After completing the work, he also tried his best to help us save where possible.”
“For example, Yang He should praise us and help us work overtime to press the network cables. Crystal head, this alone saved us tens of thousands of yuan in purchasing costs.”
“And that minicomputer.” Old Long couldn’t help but complain about his own people: “Later we. Only then did we realize that the machine was already out of service when the General Administration allocated it to us, and the maintenance fee was too high. Mr. Ge just gave it to us with the mentality of throwing it away.”
"Thanks to Professor Hu for helping us solve the problem."
"What's going on?" Zhou Zhi didn't know anything about this matter, so he turned to Hu Lidong and asked: "Is there something wrong with that IBM minicomputer?"< br>
"It's not a problem with the minicomputer." Hu Lidong explained: "It's a problem with the operating system. I checked and found that the UNIX boot was installed on it. I guess the person who took over was not familiar with UNIX, so IBM gives it They rebuilt the DOS partition and used DOS commands to operate the system. "Is that so? UNIX changed to DOS?" Zhou Zhi frowned: "Then it can't be multi-threaded? Isn't this a waste of money?"
“Anyway, it was like this when I took over. They used it to print business licenses. The applications were basically on the DOS partition, and the UNIX partition was clean.”
This approach is indeed a bit fucked up, but there are currently too few talents who are proficient in UNIX, and although talents who are proficient in DOS and WINDOWS are also scarce, at least every unit is guaranteed to have them, so this approach is not without its merits. realistic needs.
Although the performance of current minicomputers is not even comparable to that of a home computer in future generations, it is precisely because of this that the preciousness of computing resources is highlighted. When this minicomputer is in the hands of Zhou Zhi and others, of course it must be used to its full potential. its maximum performance.
“The key is that later it seemed that the machine had been tampered with, and the memory should have been expanded. IBM used this as an excuse to no longer be responsible for maintenance.”
“General Administration People seemed to want to bring out the best performance of this machine, so they wanted to change the partitions themselves. As a result, they couldn't do it, and more than half of the hard disk space was formatted incorrectly. In the end, this minicomputer really failed. It has become a machine for printing business licenses.”
“What the hell, IBM, the store is bullying customers!” Zhou Zhi was furious after hearing IBM’s attitude, and he didn’t care that he was actually IBM. The major shareholder of the company did not care that what IBM did was actually a formal operation for a regular company to undertake maintenance business. The State Administration for Industry and Commerce added memory to the machine without authorization during the maintenance period, which was a violation of the maintenance agreement.
He only cares that this approach is not applicable to the current developing China, because such a trivial matter causes a device worth hundreds of thousands to not function normally, and it cannot be called a reasonable phenomenon in any case. "Has that machine been repaired now?" Lao Long was a pure layman on these things, and the conversation between the two seemed serious.
"We are about to report to Bureau Long and Bureau Zhou." Hu Lidong said: "We have reformatted the machine to a full UNIX partition and are now installing the operating system and For the relevant application packages, wait until the Patch is completed and if there are no problems, then you can install our application system software and the machine will be completely No problem."
"That's great! This is why we saved hundreds of thousands for the General Administration! It's not like they allocated hundreds of thousands of equipment to us!" Lao Long suddenly felt confident as he slapped the table. Got up: "I want to write this in the work report!"
"But I want to make a suggestion to the Dragon Bureau." Hu Lidong said.
"You can tell me whatever suggestions you have, Xiao Hu!" Lao Long now likes Hu Lidong no matter what he likes. Otherwise, why did he become an associate professor at such a young age? You are a real expert. The blame thrown by the General Administration was solved in just a few minutes!
"I suggest that the bureau should ask the General Administration to allocate another piece of equipment," Hu Lidong said: "It is very risky to run the system on a single machine..."
"What do you mean?" Old Long was confused again: "Didn't you just say that there is no problem with the machine? Why is it so risky?"
"Let me explain this to Long Bureau. That’s a question.” Zhou Zhi smiled: “For a large information system, our assumption is that it will always be in a safe operating state.”
“Based on this concept, We need to design a safe operation mechanism for the system. This mechanism is called the 'dual-machine hot backup' mechanism. ”
"The principle of this mechanism is that in this system, no matter it is software or hardware, every link is not isolated and has an identical backup. Once this link fails, the system will detect it in time and automatically switch. If the faulty link is replaced with a healthy backup, the system can still maintain normal operation."
"If If a link does not have a backup, it will be called a 'single point' in the system, and a failure in such a link is called a 'single point of failure'."
"A single point of failure is. It is catastrophic, because once a single point fails, it will cause the system, or part of the system, to be completely paralyzed." Zhou Zhi said: "There is no doubt that we. The minicomputer in the bureau is such a 'system single point' with the greatest hidden dangers. "
"Of course, we have to analyze the specific situation in detail." Seeing Long Qishi's expression of confusion, Zhou Zhi said quickly: "If there really are no such conditions, sometimes it's just a single order. Even great men sometimes have to 'eat with raw rice', so we can't be rigid. The local requirements are that we can pursue development after all the previous conditions are met."
"But isn't there just such an opportunity now?" Zhou Zhi said with a smile: "There is something wrong with the machine allocated to us by the General Administration. The maintenance has expired and the local government has spent a lot of effort to repair it. I think we can use this reason to make a fuss.”
"They say that babies who cry are fed by milk. If we don't cry or make trouble like this, I'm afraid that the General Administration will not know how many terrible things it will throw at us in the future!"
"You are such an elbow. Someone who understands the system!" Long Qishi Putting his hand on his forehead: "You said that you really have to guard against this."
"In this way, you guys will write a report on the problem of that machine to me, make the problem more difficult, and explain the problem and the problem The process of solving the problem is written down Make the twists and turns more difficult, write down the practical needs of dual-machine hot backup more urgently, and write down the consequences of single-machine failure more seriously, and then we will take the report and go to the General Administration to make trouble!"
"If we can do it again! If we want to get another machine, then we are lucky; even if we don’t get it, then we will tell the superiors what problem we have solved, we can’t take the blame and no one knows!”
(End of Chapter)< br>