This is Bavaria, Germany!
The usual df doesn't show all partitions of your ESX-server, instead try vdf
[root@mother]# vdf -h
Filesystem Size Used Avail Use% Mounted on
/dev/cciss/c0d0p2 4.9G 2.0G 2.6G 44% /
/dev/cciss/c0d0p1 99M 29M 65M 31% /boot
none 131M 0 131M 0% /dev/shm
/dev/cciss/c0d0p6 2.0G 45M 1.8G 3% /var/log
/vmfs/devices 197G 0 197G 0% /vmfs/devices
/vmfs/volumes/4643f1e7-629ddfdd-904c-0019bbccc348
60G 21G 38G 35% /vmfs/volumes/storage1
/vmfs/volumes/46440f8b-b438c1fc-2890-0019bbccc348
68G 58G 9.6G 85% /vmfs/volumes/storage2