Every day, observing a pile of old and already useless iron, I decided to make NAS parts (well, what else?). The body was decided to do it yourself, because:
1) I wanted something unusual
2) I wanted to work with my hands
3) and it is interesting in the end!
First, the choice fell on the old Cel433 and some generally nameless mat. the board, which was later replaced by the original Steudovskaya, and Cel433 by Cel600 - although the performance of the first was quite enough.

We pretend the final layout
Initially, I wanted to make the NAS quiet, so I decided to use large (80–120 mm) and low-speed coolers for flow-through ventilation of the case, and remove all other fans. At first I thought to place two 80 mm in the front, followed by the power supply unit (without the casing), and behind it the mat. the board, but the length of the case was too big, so I used two 120 mm coolers (800 rpm) and the layout as in the photo - the power supply unit “hangs” over the mat. fee:

The body is made of Alucobond aluminum composite - 3 mm polyethylene sheet with outer layers of aluminum alloy. The material is very well processed, fairly durable and not heavy. The sheets were fastened to each other first at the corners, and then the joints were poured with epoxy glue:
')

Because on mat. the motherboard was missing SATA had to buy a controller, but the download is still possible only with IDE devices, so I had to use an old hard drive, which in the future is planned to be replaced with a CF card with an adapter. The main sources of noise - hard drives - are attached to the sides of the case and the "product" takes the finished form:

In addition to the top cover, the case was painted with matte acrylic paint and a little unfortunate - on the coating of the panels the paint does not hold very well, but on the whole I was satisfied:

Another interesting thing was installing Gentoo with a full, full rebuild and fitting all the software, of course, including the kernel and discarding everything unnecessary. A smb server, transmission, will work on NAS, and due to the presence of a sound card, some kind of player that can be accessed from other home computers and other devices. Maybe I'll think about UPnP / DAAP. I also hacked lighttpd with django, on which I started writing a web interface:

This is the “second life” of the old iron, the performance of which for certain tasks is completely and even more than was enough.
The article is published about the request of my friend who wants to get on Habr. If the article gains enough votes, an invite will be sent to it. In the meantime, you can ask questions and I will respond on behalf of the author of the article.
UPD: Thanks to the spanasik
habchelovev for providing an invite. The author of the article is
helions8 . Direct all profits to him.