Ubuntu comes with fdisk and cfdisk for partitioning hard drives ( cfdisk is a little more user friendly).
Issue the command:
replace "sda" with your sata drive.
After the partition(s) are created you will need to format the partition(s) using the type of file system you choose.
ext2 = mke2fs
ext3 = mke2fs -j
reiserfs = mkreiserfs
xfs = mkfs.xfs
jfs = mkfs.jfs
for a reiserfs file system issue the command
Then create an entry in your /etc/fstab for the device to be mounted:
/dev/sda /storage reiserfs defaults 0 1
Reboot the system.
Change your ftp set-up to upload files to the /storage partition.
You may need to do a chmod to set permissions for the /storage drive.
More about fstab options can be found here:
for fdisk look here: