NAS Killer 4.1 N400 Tower Build


Intel® Xeon® CPU E3-1270 V2 @ 3.50GHz, 3.70GHz boost - 4C/8T
32 GB (4x 8GB) DDR3 ECC RAM
8x 4TB HUS726040AL5210 SAS HDD
1x 250GB Samsung SSD 860 (boot and scratch drive)
Onboard LSI SAS2008
Coolermaster N400 Case (8x 3.5", 2x 5.25" drive bays)


I need a replacement for my current PLEX / Homeassisant server after quickly filling a 2 TB HDD with TV shows and 4K HDR movies. I’ve also been wanting to experiment with ZFS, so what better way than to build a NAS to hopefully hold lots of media to come.

The base is a combo 4 from the NAS Killer 4.1 supplemental guide. I was pleasantly surprised that I got upgraded with an E3-1270 V2 over an E3-1230 V2 which is a 0.2 GHz bump to both base and boost closes and dual NICs. I swapped out the cooler with the recommend Thermaltake and picked up some of the SAS to SATA adapters recommended in a thread somewhere on here :slight_smile:.

The 8 4TB SAS drives are set up in a raidz2 pool with a total usable storage of around 24 TB. The OS, Ubuntu, lives on a 256GB SSD which is also used as storage for virtual machines and scratch for in-progress downloads.

The case and SSD were from my existing server and the PSU is leftover from a desktop upgrade, which helped the cost a bit. The back fan had a bearing going out so I swapped the front case fan to the back and added 2 120mm fans to the front to help keep the drives cool.

Parts / Prices

Part Model QTY Price Total Seller
Combo Chenbro NR12000 1 $180 (OBO) $180 ebay
Motherboard Tyan S5512 1 included in combo
CPU Intel® Xeon® CPU E3-1270 V2 @ 3.50GHz 1 included in combo
RAM Kingston SL8D316E11D8EF 8GB (x4) 1 included in combo
CPU Cooler Thermaltake Gravity i2 95W 1 $11.99 $11.99 Amazon
HDD HGST Ultrastar 7K6000 HUS726040AL5210 4 TB 3.5" SAS 8 $45 (OBO) $411.92* ebay
SAS -> SATA Adapter SFF-8642 SAS 29 Pin to 7 Pin SATA 8 $5.67 $45.36 Amazon
SSD Samsung 860 EVO 250GB 1 reused ($60) Best Buy
Case Coolermaster N400 1 reused ($50) Amazon
Case Fan ARCTIC F12 PWM 120mm Case Fan 3 $12 $36 Amazon
PSU Corsair RMX Series (2018), RM650x, 650 Watt, 80+ Gold Certified, Fully Modular Power Supply 1 reused ($90) Amazon

*Includes shipping

Total Reused Parts New Parts (except HDD)
No Drives $273.35 $473.35
With Drives $685.25 $885.25

I probably could have gotten a better deal on the drives, but at the time there didn’t seem to be a lot of inventory of 4TB drives and the 3TB drives were not that much cheaper per TB.