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Alibaba ACA-Developer Exam - Topic 1 Question 90 Discussion

A developer runs a web application on a physical machine in an IDC. The machine is running Ubuntu Linux. Which of the following is the recommended method if he wants to migrate this web application onto an Alibaba Cloud ECS instance?
A) Use a third-party image creation tool to create an image from the physical server. Upload the image to the ECS console to turn it into a custom image. Then, use the custom image to create ECS instances.
B) Use SMC(Server Migration Center) to collect data from the origin physical server. Create an intermediate ECS instance on Alibaba Cloud and wait for the data transfer to complete. Then generate a new image directly from that intermediate ECS instance.
C) Use a third-party image creation tool to create an image from the physical server. The image is then uploaded to Alibaba Cloud Object Storage Service (OSS) for storage. In the ECS console, import that image from OSS, then, create an ECS instance from the custom image.

Alibaba ACA-Developer Exam - Topic 1 Question 90 Discussion

Actual exam question for Alibaba's ACA-Developer exam
Question #: 90
Topic #: 1
[All ACA-Developer Questions]

A developer runs a web application on a physical machine in an IDC. The machine is running Ubuntu Linux. Which of the following is the recommended method if he wants to migrate this web application onto an Alibaba Cloud ECS instance?

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Suggested Answer: A

by Tamar at Oct 30, 2025, 08:03 AM

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Johnetta
6 months ago
I feel B is the safest. Directly generating an image from ECS is efficient.
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Caprice
7 months ago
Option C sounds good too. OSS is reliable for storage.
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Ricki
7 months ago
I’m leaning towards A. Using a third-party tool seems straightforward.
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Lavonna
7 months ago
I think option B is the best choice. SMC simplifies the process.
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Jesusa
7 months ago
I’m not sure about that, sounds a bit complicated.
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Tayna
8 months ago
Wait, can you really create an image directly from an ECS instance?
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Jean
8 months ago
I agree, SMC makes it easier!
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Maryann
8 months ago
Option B sounds like a lot of work, but at least it's the "recommended method." Whatever that means.
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Gracia
8 months ago
Haha, I bet the developer is wishing he had a magic "Migrate to Cloud" button right about now.
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Rose
8 months ago
A is the quickest way to get the job done. Who needs all that extra complexity, am I right?
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Zoila
8 months ago
B looks like the safest bet. Using an intermediate instance to transfer the data is a smart move.
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Sheron
9 months ago
Option C seems like the most straightforward approach. I like how it leverages OSS for storage.
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Maile
9 months ago
I’m a bit confused about the intermediate ECS instance in option B. Is that really necessary, or can we just go straight to creating the ECS instance?
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Merlyn
9 months ago
I practiced a similar question where we had to choose between using OSS and direct image creation. I feel like option C might be more straightforward.
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Heike
10 months ago
I thought using a third-party tool was more reliable?
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Nathalie
10 months ago
Option B is the best choice for smooth migration.
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Sherell
10 months ago
I think option A sounds familiar, but I can't recall if third-party tools are always reliable for this kind of migration.
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Noelia
10 months ago
I remember we discussed using SMC for migrations in class, but I'm not sure if it's the best option here.
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Irene
10 months ago
Option B with the Server Migration Center sounds interesting, but I'm worried about the extra step of creating an intermediate instance. That could add some complexity. I think I'd lean towards the more straightforward option C if I can get a good image created from the physical server.
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Kimi
11 months ago
The key seems to be creating a custom image from the physical server and then using that to provision the new ECS instance. I'd probably start by exploring the third-party image creation tools to see which one works best for my setup.
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Cherry
11 months ago
I'm a bit confused by the different options. Can we use the Server Migration Center to directly migrate the physical server to an ECS instance, or do we have to create an intermediate instance first? I'm not sure which approach is recommended.
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Gretchen
11 months ago
I think I'd go with option C. It seems the most straightforward - create an image from the physical server and then import that image into Alibaba Cloud to create a new ECS instance.
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Anissa
6 months ago
I’d go with B for a smoother migration process.
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Alonso
6 months ago
C is definitely the simplest method.
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Therese
6 months ago
I’m leaning towards A. Custom images are powerful.
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Haley
9 months ago
Option B could be better for larger data sets.
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Bronwyn
9 months ago
I like option C too. It sounds easy to follow.
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