Delta/incremental content Migration in AEM 6.2 Tags: CQ

[#1]

Hi Team,

 Started migrating the AEM5.6.1 to AEM 6.2. First round completed successfully in lower environments before apply these in production I wanted to know how to do the incremental migration in AEM6.2. 

Here is the situation:

In our case migration taking 5 to 6 complete days. So in the new system, we are losing all these 6 days data. How Can do the delta migration. 

It's very urgent, Any suggestion or approaches that can help me to come out from this situation.

Thanks

[#2]

How big is your production repository vs lower environments? Also how many CPU's and total memory do you have assigned to lower environment vs production? Keep in mind that the OS also needs some memory for I/O operations. Do you have a physical box assigned to each environment or are they all running in separate VM's on a single physical box?