two exports on server, only one directory appears on client

[f3ar007 <f3ar007@gmail.com>]

hi,

i have a problem mounting two separate directories on the client.  the
exports, on the server, are defined as two different directories.  and
exportfs -rav outputs the correct ipaddr:/path/to/mount on the server.
 when i mount the separate directories on the client "mount -t nfs
ipaddr:/full/path /mnt/hd1" and "mount -t nfs ipaddr:/full/path
/mnt/hd2" both directories on the client /mnt/hd1 and /mnt/hd2 list
the contents of only hd2.  for example, on the client, ls /mnt/hd1
outputs the same directories as ls /mnt/hd2.  the server has the
correct mount points /dev/sda1 as /mnt/1tb and /dev/sdb1 as
/mnt/320gb.

here is the code to clarify:

# server output of `mount | grep /dev/sd`
/dev/sda1  on  /mnt/1tb      type vfat  (rw,noexec,nosuid,nodev,umask=000)
/dev/sdb1  on  /mnt/320gb  type vfat  (rw,noexec,nosuid,nodev,umask=000)
# notes two different harddrives here, so the directories in each are different.

# server output of `cat /etc/exports`
/mnt/1tb     client-ipaddress(rw,fsid=0,subtree_check,no_root_squash,crossmnt,async)
/mnt/320gb client-ipaddress(rw,fsid=0,subtree_check,no_root_squash,crossmnt,async)

# server output of `exportfs -rav`
exporting client-ipaddress:/mnt/1tb
exporting client-ipaddress:/mnt/320gb

### end of server ###

### client ###

# client commands
mount -t nfs server-ip:/mnt/1tb /mnt/nfs-1tb
mount -t nfs server-ip:/mnt/320gb /mnt/nfs-320gb

# client output of `mount | grep server-ip`
server-ip:/mnt/1tb  on  /mnt/nfs-1tb  (rw,addr=server-ip)
server-ip:/mnt/320gb  on  /mnt/nfs-320gb  (rw,addr=server-ip)

# client output of `ls /mnt/nfs-1tb` == `ls /mnt/nfs-320gb`
# note the client output of these two commands should be the contents
of server /dev/sda1 then server /dev/sdb1

my question is: how do i mount the two directories separately in order
to list contents of both harddrives? is there a separator in
/etc/exports that i am missing, causing it to read only the second
export?
is there anything i am missing here?