Xenforo define different attachment locations and add basic redis support (using xon's redis add-on)

config.php

<?php
# $config['enableListeners'] = false;
$config['db']['host'] = 'localhost';
$config['db']['port'] = '3306';
$config['db']['username'] = '';
$config['db']['password'] = '';
$config['db']['dbname'] = '';
$config['db']['socket'] = null;

$config['fullUnicode'] = true; #unicode emotes
$config['enableTfa'] = false;  #disable 2fa
# $config['superAdmins'] = '1'; #no longer used?
$config['enableAddOnArchiveInstaller'] = true; #enable add-ons

// Keep code_cache and temp directories in local /tmp drive 1 SSD
$config['codeCachePath'] = '/srv/www/forums/internal_data/code_cache';
$config['tempDataPath'] =  '/srv/www/forums/internal_data/temp';

// PATH FOR internal_data DIRECTORY (image attachements on SSD drive 2)
$config['internalDataPath'] = '/drive2/forums/internal_data;
$config['internalDataUrl'] =  '/internal_data';

// PATH FOR data PUBLIC DIRECTORY (video attachements and avatars etc on SSD drive 3)
// using a subdomain to bypass cloudflare proxy
$config['externalDataPath'] = '/drive3/forums/data';
$config['externalDataUrl'] =  'https://video.mydomain.com/data';

//basic redis config using xon's redis add-on
$config['cache']['enabled'] = true;
$config['cache']['provider'] = 'SV\RedisCache\Redis';
$config['cache']['config']  = array(
        'server' => '127.0.0.1',
        'port' => 6379,
        'compress_data' => 6,
);