More than one external drive

Hi folks,
I have a older model 1TB TC that has been running just fine for over three years now. When it was first set up, I connected three additional hard drives to it via the USB port on the back using a powered D-Link USB hub as an intermediary. With the old Airport utility, this was not a problem. I was able to set it up so all three drive's contained volumes were seen and mounted as shared volumes on my network's clients' OSs (mix of Wins and OS X).
However, as time has gone on, the attached drives have become full. I don't want to remove any of the existing drives as they contain various family members' media and destinations for Time Machine backups. What I would like to do is to add an additional 4TB Western Digital My Book drive to the collection.
Problem is, the new Airport utility only shows the TC's internal drive and one of the external drives on the drives tab! I can't tell if the TC sees the new drive or not. It does not appear in any of my network computer's shares, so I am leaning towards not.
So, how can I connect the new drive (formatted as OS X Extended Journalled/GUID) and be able to configure the connection in Airport utility so the contained volume will mount as a shared volume on my network's clients? That is, without downgrading the firmware on my TC to do it!!!
Thanks in advance for any suggestions or assistance.

If these are full sized drives and you are trying to power both from the bus, then more than likely the second drive is not running. Try instead powering the Firewire drives from an external power source or connecting each to a separate Firewire port.
Time Machine will only backup to one backup drive, but can backup any number of attached drives.

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Create a concatenated disk set
Increase storage space with a concatenated RAID set (also called “Just a Bunch of Disks” or JBOD). If you need one large disk, but you have only several smaller disks, you can create a concatenated disk set to use several small disks as one large disk.
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Message was edited by: skeletal_wreck

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Not at all.
Plug in as many as you have ports for
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More than one external drive

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