Multiple DA servers in a single EV site

Hi,

Looking for input on this question:

Customer has a single EV site but 2 EV servers in US and EU, with local SQL servers used for storing VS DB's in US and EU.

Would like to implement DA serves in both locations.

Should I configure 2 separate DA config DB's and 2 customer DB's for US and EU?  Is that permitted?  If not, can I use the same config DB and separate customer DB's for each location?

Any help would be appreicated.

Thanks,