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41
votes
5answers
2k views

PDU wiring - is this normal (or even safe)?

I removed the side panel of our server rack so I can clean up some of the wiring. Inside I found the PDU was wired like in the picture. Instead of an incoming power cable, there's just 3 uninsulated ...
1
vote
1answer
60 views

Safest approach when designing storage server [duplicate]

We are planing cloud solution for our customers and we are really concerned with designing safest storage servers for their files. This storage won't be IO demanding, as it will contain only files ...
0
votes
4answers
129 views

Linux utility to monitor for stupid / likely ill-advised commands

sudoing adds a little bit of a roadblock to doing potentially stupid and dangerous things in the Linux shell, but it is a meager deterrent to newer Linux users. Still, many users login as root or have ...
-2
votes
1answer
208 views

PHP SuHosin — my code is already secure… is it needed?

I believe I have set up my code quite securely, it validates and cleans user input so it's safe, etc. So would I need SuHosin? (which is a security addition/patch for PHP) How does it help me if my ...
19
votes
5answers
3k views

Is carpet, or another floor covering, appropriate for a server room?

Ive requested the carpet to be removed from my server room, a disaster was almost waiting to happen air con leaked and the carpet UNDER the rack was soaked. (air con unit 0.3 meter from rear of ...
88
votes
24answers
26k views

How do I prevent accidental rm -rf /*?

I just ran rm -rf /* accidentally, but I meant rm -rf ./* (notice the star after the slash). alias rm='rm -i' and --preserve-root by default didn't save me, so are there any automatic safeguards for ...
44
votes
7answers
3k views

How to take full ownership of an IP address?

My business is... troublesome. What I do is legal in every country on earth, but some people don't like it, and make it so tough on my poor ISPs that I am forced to go looking for new providers more ...
2
votes
2answers
604 views

Can one SSD replace a pair of mirrored drives?

I have various firewall/router/utility type boxes that do not require much if any storage for their primary purpose other than booting. But I do like to be able to put a more or less standard ...
3
votes
4answers
821 views

Networking - shielded cat 5 cable and mains power

Unsure if this is the correct forum. Anyhow, we have had a network installed, using shielded cat 5 cable. This cable is in the same trunking as the mains power cable. The electrician says this is ...
12
votes
15answers
2k views

Tool to assist loading servers into a rack?

This three questions have been merged into this one. The following answers might have come from any of them, or might be a generic answer to all of them. Is there any kind of tool to assist in ...
41
votes
6answers
20k views

What's the best fire suppression for a server room? [closed]

What is the state of the art in fire suppression for server rooms? What are the top priorities in choosing a good system?