Is the machine you're referring to, this Precision T1600 Tower ?
http://i.dell.com/images/global/pro...hts/workstation-precision-t1600-overview2.jpg
It has a total of four expansion slots.
http://i.dell.com/sites/content/sha...s/en/Documents/precision-t1600-spec-sheet.pdf
"One PCIe x16 Gen 2;
one PCIe x16 Gen 2 (wired x4);
one PCIe x1;
one PCI.
All full-length and full-height per PCIe specification"
Maybe you could purchase an adapter plate and SATA to ESATA internal cable
assembly, so that ESATA would show on the back of the machine ? If there
is a SATA connector on the motherboard (controlled by the Southbridge),
that might also support ESATA.
http://www.newegg.com/Product/Product.aspx?Item=N82E16812816068
http://images17.newegg.com/is/image/newegg/12-816-068-S01?$S640W$
There is a good chance that will work with the recovery disc, as
long as the machine has a spare SATA connector on the motherboard,
to use for the plate.
If the machine had a spare drive bay, you could place your
backup drive in the bay as a raw mechanism. That would be
another option in an emergency (remove hard drive from external
enclosure, and install it inside the machine).
I can't say anything more, because I'm having trouble getting to
documentation for Precision T1600. The Dell site isn't helping.
I don't know how many SATA connectors it has. The minimum should be
four, but I can't be sure of that. One would be for the optical
drive, one for hard drive, leaving two others. That would be a
first guess, but without a picture of the motherboard, it's hard
to say for sure.
The Southbridge supports six (two SATA III, four SATA II), but
companies like Dell don't put connectors for them all. Getting
six connectors is more typical of retail motherboards you use
in home built computers.
Paul