Hi,
i have latest version of directadmin (1.53.0) on centos 7.x with apache (2.4.33), mariadb (10.2.15) and php (5.6.36 & 7.0.30) with this partition map:
[root@da ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 76G 41G 32G 56% /
devtmpfs 3.8G 0...