1) What will you be doing with this PC? Gaming? Photoshop? Web browsing? etc
ZFS File Server, maybe some network monitoring (if there's enough power--but not a priority). I'd like to build a machine that will last for 5 years, but longer is always a plus.
2) What's your budget? Are tax and shipping included?
As cheap as possible, but getting the job done. Price ranges in sample builds below, but would be happy if it were cheaper.
3) Which country do you live in? If the U.S, please tell us the state and city if possible.
South of Denver, CO area. MicroCenter is probably 30-40 minutes away.
4) What exact parts do you need for that budget? CPU, RAM, case, etc. The word "Everything" is not a valid answer. Please list out all the parts you'll need.
CPU, RAM, MB, Case, PSU, storage
5) If reusing any parts, what parts will you be reusing? Please be especially specific about the power supply. List make and model.
Not planing on reusing parts, as current server is all 5+ years old
6) Will you be overclocking?
No
7) What is the max resolution of your monitor? What size is it?
N/A
8) When do you plan on building/buying the PC?
Within the next few days, but can wait if there's a deal coming
9) What features do you need in a motherboard? RAID? Firewire? Crossfire or SLI support? USB 3.0? SATA 6Gb/s? eSATA? Onboard video (as a backup or main GPU)? UEFI? etc.
ECC RAM, USB 3.0 for external drives, at least 6 SATA, IPMI and dual GigE are nice to have but not mandatory. Main priority is low power consumption and quiet, as this sits in my office and my current stuff is too noisy.
10) Do you already have a legit and reusable/transferable OS key/license? If so, what OS? Is it 32bit or 64bit?
Will be using FreeBSD 10
I am in the process of replacing my file server, and am looking at my options. Planning on a single SSD for boot and 4 drives in raidZ2 for storage, and maybe 1 extra drive for VM storage or network logging--but not a necessity. I like the idea of the T20, and I've heard good things about them, but am not super excited about the add-on SATA card. I really like the looks of the Norco mini-ITX, and the i3-T CPU with super low power and AES. I'm concerned that the Norco with the small PSU and 80mm fan might be noisy.
It looks like I can get WD Red 3TB drives today for $120/ea, so planning to buy 4 of them.
I know they have had some pretty smokin' deals on the T20 in the past, so that might be a consideration as well.
I did some basic specs, here are some build examples I made. They are all pretty close, and I could probably do some things here and there to save costs (8GB RAM, Pentium/Celeron, etc):

ZFS File Server, maybe some network monitoring (if there's enough power--but not a priority). I'd like to build a machine that will last for 5 years, but longer is always a plus.
2) What's your budget? Are tax and shipping included?
As cheap as possible, but getting the job done. Price ranges in sample builds below, but would be happy if it were cheaper.
3) Which country do you live in? If the U.S, please tell us the state and city if possible.
South of Denver, CO area. MicroCenter is probably 30-40 minutes away.
4) What exact parts do you need for that budget? CPU, RAM, case, etc. The word "Everything" is not a valid answer. Please list out all the parts you'll need.
CPU, RAM, MB, Case, PSU, storage
5) If reusing any parts, what parts will you be reusing? Please be especially specific about the power supply. List make and model.
Not planing on reusing parts, as current server is all 5+ years old
6) Will you be overclocking?
No
7) What is the max resolution of your monitor? What size is it?
N/A
8) When do you plan on building/buying the PC?
Within the next few days, but can wait if there's a deal coming
9) What features do you need in a motherboard? RAID? Firewire? Crossfire or SLI support? USB 3.0? SATA 6Gb/s? eSATA? Onboard video (as a backup or main GPU)? UEFI? etc.
ECC RAM, USB 3.0 for external drives, at least 6 SATA, IPMI and dual GigE are nice to have but not mandatory. Main priority is low power consumption and quiet, as this sits in my office and my current stuff is too noisy.
10) Do you already have a legit and reusable/transferable OS key/license? If so, what OS? Is it 32bit or 64bit?
Will be using FreeBSD 10
I am in the process of replacing my file server, and am looking at my options. Planning on a single SSD for boot and 4 drives in raidZ2 for storage, and maybe 1 extra drive for VM storage or network logging--but not a necessity. I like the idea of the T20, and I've heard good things about them, but am not super excited about the add-on SATA card. I really like the looks of the Norco mini-ITX, and the i3-T CPU with super low power and AES. I'm concerned that the Norco with the small PSU and 80mm fan might be noisy.
It looks like I can get WD Red 3TB drives today for $120/ea, so planning to buy 4 of them.
I know they have had some pretty smokin' deals on the T20 in the past, so that might be a consideration as well.
I did some basic specs, here are some build examples I made. They are all pretty close, and I could probably do some things here and there to save costs (8GB RAM, Pentium/Celeron, etc):
