Building a ventilated fire-protected cabinet

[Pohen]

Planning to build a fireproof corner cabinet to place a server in. The server needs to be on and requires air intake and outtake.
How does one ventilate such a solution without risking heat getting in and damaging the disks in case of a fire?

I found this, but the cost is not really within my budget.
http://www.arkivexperten.se/datorskap/ventilerat-brandklassat-serverskap

My idea is to build with fire-rated gypsum or double gypsum boards on all sides with some wood board behind.

 

[Anders243]

Now, this is not a direct answer to your question, but it might become much easier if you just put the disks in a fireproof enclosure. It is probably much easier to run a couple of ESATA cables + power to a safe and place the server next to it, than trying to find a solution that is good enough to keep an entire server alive inside the safe.

Edit: For example, you can buy a 100L safe with 120-minute fire protection for a few thousand (4-10k). And if you buy from a reputable manufacturer, you can get cable fittings included.

 

[Robert-san01]

There are fire protection sealants that expand when heated. Now, I don't know if it expands before smoke enters and damages the disks, but it might be possible to solve with good air filters.

http://www.ragnarssonsbrandservice.se/category/40

 

[Pohen]

Now this is not directly answering your question, but it might become much easier if you just place the disks in a fire-protected enclosure. It is probably much easier to run a couple of ESATA cables + power to a safe and place the server beside it, than trying to find a solution that is good enough to keep an entire server alive inside the safe.

Edit: You can, for example, buy a 100L safe with 120min fire protection for a few thousand (4-10k). And if you buy from a reputable manufacturer, you can get cable entries included.

Good point, I can replace the server, the contents on the disks are more difficult. But how do I cool the disks if I focus on an enclosure for them?
My first thought was to place heat sinks through the safe but these get hot during a fire and the effect is reversed.

Will look further into fire safes with cable entry.

 

[Pohen]

There are fire protection sealants that swell in response to heat. Now, I don't know if they swell in time before smoke gets in and ruins the disks, but it might be solved with a good air filter.

[link]

I hadn't even thought about the smoke, but a good air filter should work.

Kniparen
For both cables and plastic pipes. Has an internal coating that swells when heated and seals effectively against fire, smoke, and gas. Kniparen is available in VP pipe dimensions, as well as 60 and 90 mm.

A few of those should do the trick.