10TB @ 1Gbit
Perhaps you have some Linux ISOs you need seeding? We have you covered.
X3430 (or better!)
2x2TB HDD (add another for just an extra $7/mo (4 drives max)
100Mbit unmetered (or 10TB @ 1Gbit for $5 cheaper!)
Perhaps you need some RAM? On an E3?
10TB @ 1Gbit (or 100Mbit unmetered for an extra $5/mo)