Gandi.net Groups

I purchased a three share server (total disk space: 15 GB). 

I attached the 15 GB disk to the server (took more than an hour) and
then rebooted the server.

Now after restarting the server, I did a df -h to see the disk space:

df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/xvda1            2.4G  676M  1.6G  30% /
tmpfs                 385M     0  385M   0% /lib/init/rw
udev                   10M   20K   10M   1% /dev
tmpfs                 385M  4.0K  385M   1% /dev/shm

The 15 GB disk is NOT mounted.

My /etc/fstab contents are:

/dev/xvda1    /                 ext3    rw,noatime,errors=remount-ro  0 
  1
/dev/xvda2    none              swap    rw        0    0
none         /proc             proc    rw,nosuid,noexec  0    0

mic2574661@alpha:~$ mount
/dev/xvda1 on / type ext3 (rw,noatime,errors=remount-ro)
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)


How do I get my 15 GB disk space to work? I have sent 4 support tickets
to Gandi but NO reply at all from them.

Any one can help me sort this?

Thanks.