Hikvision NVR Options

[cosmarchy]

Hi,
I have found a document which details what the naming conventions are for their products.

For a DS series NVR, two of the options are:
I = international
A = All-in-one
1-24 = HDD no
E/G/F/I = generations

Does anyone know what is specific to an international model? What is all-in-one about an all-in-one model?
Is the HDD no the number supported or the number installed?
Does anyone now what is specific to each of the generations? Are any better than another?

Thanks for your help.

 

[Silas]

International is maybe related to power 110/220 ?
Not sure you would be able to have 24 drives unless it is a commercial chassis?
Generations normally follow firmware that has newer options like 4-5mp?