Steps for unified fs system:
login in as root:
run the following:
1) df -h: (No /data available currently)

Filesystem                                  Size  Used Avail Use% Mounted on
169.254.30.167:/artifactory_prod_2692_vol1   25T  458M   25T   1% /data1
169.254.30.168:/artifactory_prod_2692_vol2   20T   17M   20T   1% /data2

2) do yum install of mergerfs-2.32.6-1.el7.x86_64.rpm (this is already available in /tmp location on dfw1)
3) mkdir /data
4) chown -R artifactory:artifactory /data
5) mergerfs -o defaults,allow_other,minfreespace=1M,moveonenospc=true /data1/:/data2/ /data/
6) df -h

Filesystem                                  Size  Used Avail Use% Mounted on
169.254.30.167:/artifactory_prod_2692_vol1   25T  458M   25T   1% /data1
169.254.30.168:/artifactory_prod_2692_vol2   20T   17M   20T   1% /data2
1:2                                          45T  474M   45T   1% /data