Make sure lsadm (lsws admin user) has read permission to that path as well as its parent paths.
It is not a good idea to mount hdd under /root (root user home directory). Common practice is under / so it becomes /HDD2.
Also, vhost root is not the same as vhost document root. In your case, vhost root should be $SERVER_ROOT/static_ellapink and vhost document root (in vhost general tab once vhost is created) be /HDD2/static_ellapink.