I think the JetDirect cards may be internal Token Ring, although there may also be some other 10BaseT internal ones, and I think there may also be an external 3 port one.
I will have a look tonight.
I can chuck in a couple of HDs if you like, I will pick a couple that look good (and I think I have used) but I am not testing them fully, what you want SCSI or IDE (or a bit of both).
No they were not RAID but they could work like that if you had a good controler. I wish I had not chucked them now, at the time I thought no one would want them. At the dump there was this big skip full of metal and they told me to put them in there, the last I saw of them was when I was throwing them at some old Microwave.