QA Autor is corrupted and need copy of prod repo to QA author.

[AkashCh2]

One of my QA author is corrupted and I don't have any backup online or offline on that server, But Prod env running fine, I tried to restore back get good revision segment but no luck.
Currently, I have attached which contains the CRX-quickstart folder of a prod to my QA env.
So what thing should I copy from the disk and replace with QA env, so that I can have all previous configurations of QA env? and Do I need to copy whole crx-quickstart folder or some of them?
also what precautions should I take before doing that

[A_H_M_Imrul]

@AkashCh2 

I assume you are running it on prem (with no AMS)

I don't recommend copying the entire repository (CRX-quickstart) 

Option 1: If the QA author is at least running. you can move the necessary packages from prod to the QA. (via pkg manager)

Option 2: if the QA author is not even up and running, spin up a fresh instance and move pkgs from prod to QA. (new)

See is this makes sense. 

[AkashCh2]

@A_H_M_Imrul  I have tried to move segmentstore and datastore from prod to QA but no luck.
I will go with option 2nd which starts a fresh instance but before doing that I have some questions:
 1. How should I get the replication agent config just like the old QA server?
2. What about the user/group and their password?
3. The entire repo is around 1.2TB and there are a lot of assets how should I get it?
4. What other thing should I consider before proceeding with it?

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I am thinking in another way please correct me if I am wrong.
Our AEM is running on-prem VM and currently, I have attached a prod backup disk to the QA server If I run AEM directly from the backup disk will it run?
2nd what should I consider if I start from a backup disk like hostname and which other config files?
Really concerned that if I start AEM and it runs successfully, will it be a replica of prod does it affect the live prod env? 

[kautuk_sahni]

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