I have a problem with exporting large amount of data to csv file using php.

*Information:*

1. Need to export 700000 list of addresses from database table(address).
2. Server timed out or lacking memory
3. project I'm working on working with multiple servers

*My solution(what have i tried)*

Get data part by part(from database) process this data(`fputcsv`) write this part to the temporary file - and send information to user via `Ajax` (show him the amount of processed Percentage). After last part of data has been processed just give user link to download this file. All is fine i have did this and this solution works for me - on my local enviroment, **but**

*the problem is* - `project I'm working on working with multiple servers` so I ran into a problem that temporary file can be stored on different servers.

For Example:

I have 3 servers: `Server1`, `Server2` and `Server3`.

First time i read data from db with `limit 0 50000` - process it and save it to `File.csv` on `Server1`, next iteration `limit 50000, 50000` can be saved on **another server** `Server2` - this is the problem.

*So my question is:*

Where i can store my processed temporary csv data, or maybe i am missing something, i am stuck here, looking for advice.
Every suggestion or solution will be appreciated! Thanks.

**UPDATE**

PROBLEM IS SOLVED

Later i will post my solution