With FreeNas, it rocks !!

I bought this to mount a small computer with Nas FreeNas.
FreeNas is installed on a USB key stuck directly onto the motherboard.
(A normal USB socket is provided on the motherboard inside the case)

This little PC runs like clockwork. With 4 2TB drives,
I have 3.5 TB of space in RAID6 (ZFS2) that allows two failed drives
before losing data for good in the third disc Crame.
Transfers through a gigabit network range between 6 and 60 MB / s.
6-11 MB / s for a multitude of small files being transferred and 20 to 60 MB / s for large
files. Short but good.

It has 2GB of RAM comes with what is sufficient to see the Raid1 Raid5.
I upgraded to 8 GB and I won a few MB / s transfer nothing very mirobolant
but for the RAID5 or 6 ZFS must see it maybe a little less pti. But hey who can do more
can do less.

There is also a SATA hard drive comes with 250 GB. This is a good record system
but it will take place in the Bay 5 "1/4 of the machine or while sacrificing disk space
on 4. For me, this disc has replaced a Lacie external drive that had burnt and which I had kept the box.
(Yes, yes, mostly external disk units can be used for other than internal drives shipped with.
It depends on the brand and of course when the case itself is not defective.)

There are also 6 USB ports (4 front and 2 rear) and an e-SATA port.
With FreeNas, we can make Raid1 - 5-6 with external USB drives (if they are recognized by FreeNas)
or just plug in your external drive as NTFS, FAT32, or else the NAS and access from the network.

What you should know is that the video output is VGA. Therefore provide a VGA cable when purchasing a compatible screen and if you do not have one at home.
That said if you install FreeNas, you will need the screen 10 minutes because the whole administration of NAS is then
through the network with a web browser (firefox, chrome, safari, etc ...) so as to take a view screen, in this case.

In addition, HP has planned all screws required for mounting disks, bolted to a plate in the door of the NAS and the key to match.
The screws are Torx size 10. Not a big worry, the key comes with. But hey, it is not super convenient (it's a bent key Ikea style)
Fortunately most small boxes of tools for PC with a handle and contain a few bits Torx 10.
(My little box of old tools 15 years contained a.) The assembly-disassembly will be much easier with this kind of tool.

In short this PC is just too early for my use. I am delighted.
In addition to the refund offer, it would be stupid to deny it. (However even without the offer)