is a facility used to house computer systems and associated components, such as telecommunications and storage systems

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38
votes
3answers
1k views

Assessing equipment damage following a lightning strike - Should I have planned more?

One of my client's sites received a direct lightning hit last week (coincidentally on Friday the 13th!). I was remote to the site, but working with someone onsite, I discovered a strange pattern of ...
35
votes
34answers
36k views

Monitoring server room temperature

I have a small server room with its own AC unit. Recently, the AC died, and the temperature increased from 70 F to > 90 F. We rarely go in this room, so I was lucky that someone happened to notice ...
44
votes
14answers
93k views

What is the correct temperature for a server room?

When I was working in our server room, I noticed that it was very cold. I know that the server room has to be cold to offset the heat of the servers, but perhaps it is TOO cold. What is an ...
202
votes
15answers
11k views

I've inherited a rat's nest of cabling. What now?

You know, you see pictures like below and sort of chuckle until you actually have to deal with it. I have just inherited something that looks like the picture below. The culture of the organization ...
12
votes
6answers
5k views

free tool for datacenter documentation [closed]

Is there any free tools out there that can help to better document at datacenter, for information like servers in a rack, the group port it is connected to and etc?
39
votes
7answers
4k views

Cable Management Policy

We've all seen good and bad examples of cable management. What are objective, measurable requirements that can be used in a policy to maintain cabling order in the rack/server room/data center? ...
2
votes
3answers
1k views

how to find a good data center?

At my start-up, we're getting to the point where we should be hosting our servers at a data center. I'd appreciate any tips and tricks y'all can offer on finding a reputable place to colocate our ...
15
votes
1answer
951 views

How to correctly move a server inside a rack up and down

Maybe a bit stupid question, but Sometimes (rarely but it happens) I need to move a server in a rack 1-2U up or down. What do you think, which of the ways is the most correct and useful and why? ...
5
votes
3answers
2k views

If DNS Failover is not recommended, what is?

As a followup question to his very popular question: Why is DNS failover not recommended?, I think it was agreed that DNS failover is not 100% reliable due to caching. However the highest voted ...
-2
votes
3answers
447 views

Benefits of hosting servers at data centers?

There are several Data Center Network Designs, and I'm working on a research paper on this topic. To start with I'd like to know why to use data centers? Obviously besides the amount of space 10k ...
42
votes
4answers
69k views

Splunk is fantastically expensive: What are the alternatives? [duplicate]

Possible Duplicate: Alternatives to Splunk? This has been discussed, but it has been several months, so it may be time to revisit it: Earlier discussion RE Splunk alternatives For the ...
47
votes
17answers
9k views

Do you skip a rack unit between servers?

It seems like there's a lot of disagreement in mindsets when it comes to installing rackmount servers. There have been threads discussing cable arms and other rackmount accessories, but I'm curious: ...
21
votes
16answers
1k views

How have you saved green by going green?

For the purpose of this question, I am interested in server/datacenter related hardware. Have you had any measureable amount of ROI by swapping existing hardware to more "green" or energy efficient ...
6
votes
10answers
14k views

Rack layout tools

I'm wondering if there's any tools (preferably offline) that would allow me to layout all of the new equipment that will be going into several standard racks. Currently I'm using Excel to map out all ...
6
votes
6answers
607 views

Data Center Design and Preferences

When either selecting a data center as a co-location facility or designing a new one from scratch, what would your ideal specification be? Fundamentally, diversified power sources, multiple ISPs, ...
40
votes
7answers
6k views

Why do we still use power supplies on datacenter servers?

Computers mainly need three voltages to work : +12V, +5V and +3,3V, all of them are DC. Why can't we just have a few (for redundancy) big power supply providing these three voltages to the entire ...
11
votes
7answers
7k views

Avoiding DNS timeouts when a dns server fails

We have a small datacenter with about a hundred hosts pointing to 3 internal dns servers (bind 9). Our problem comes when one of the internal dns servers becomes unavailable. At that point all the ...
8
votes
3answers
853 views

RedStation.com is heaven for ddos attackers, How to file complaint? [closed]

Sorry, I don't know where to open this subject. This is not the first time we have faced with a massive DDOS attack from one of servers in RedStation.com and even after we had contacted with their ...
0
votes
2answers
859 views

Datacenter IP Addressing and DNS Management

We are setting up a small Datacenter, about 300 amps power and max 50 racks, I have studied networking mostly Microsoft and Windows based systems , but I do not understand the IP addressing, DNS ...
8
votes
2answers
248 views

“Zinc Whisker” issues?

Good morning; We've been having intermittent power supplies failures in our data center that have been preliminarily attributed to "zinc whiskers". I'm just starting to read about them (I just ...
1
vote
3answers
2k views

Data Center Power Draw Calculation

I have a difficult time calculating the power draw of our upcoming server (Dell R710) and what that means in terms of how a data center will calculate power costs. Hopefully you can help shine some ...
15
votes
2answers
337 views

What are the different classes of Internet Connection and how do they differ?

I'm looking for the technical differences between consumer and professional Internet connections. By "professional" I mean: The kind you can get at a datacenter The kind you can get at an office ...
12
votes
9answers
4k views

Why datacenter water cooling is not widespread?

From what I read and hear about datacenters, there are not too many server rooms which use water cooling, and none of the largerst datacenters use water cooling (correct me if I'm wrong). Also, it's ...
4
votes
1answer
1k views

PDU says to ground to rack with “thread making screw”.. this is impossible?

I'm trying to use the 'thread making screw' to ground my Dell PDU to the Rack, however the metal on the rack is impossibly hard. Is this even required? The included screws don't even seem "thread ...
1
vote
2answers
297 views

How to measure power usage effectiveness (PUE)

As part of a sustainability project I have been requested to measure the PUE of our server room. We have gross power usage figures from the UPS (and seperate supply meters) but nothing else. How in a ...
1
vote
2answers
488 views

Buy vs rent for servers and other hardware

What are the pros and cons of buying your own dedicated servers and putting them in a data center yourself (along with firewall, router, storage, etc.) versus just renting? I have always rented but ...
0
votes
1answer
2k views

How to set up FCoE target under Ubuntu?

We have: Ubuntu 10.04.2 LTS installed MegaRAID controller with 2 virtual RAID10 drives. 2x 10GbE dual port adapters (Supermicro AOC-STGN-I2S aka Intel 82599) We need to make those Megaraid drives ...
-8
votes
5answers
202 views

server migration in data center help & suggestions [closed]

We have about 15 Windows 2003 and 2008 servers at our data center, which host hundreds of different sites and databases. We have to move them to a new rack from 5th floor to 3rd floor. This move ...
7
votes
6answers
706 views

Rack layout for future growth

We're getting ready to move to a new colo facility and I'm designing the rack layout. While we have a full rack, we only have 12U worth of hardware right now: 1x 1U switch 7x 1U servers 1x 2U server ...
7
votes
3answers
10k views

What does “cross connect” means in Datacenters?

I have been doing some research on Datacenters and this is one of term that i have yet to wrap my mind around. I would appreciate if someone in the field could explain in simple terms what exactly ...
4
votes
0answers
5k views

What’s the best way to label cables in a data center [duplicate]

Possible Duplicate: What is the most effective solution you used to label cables? We're in the midst of planning for a big data center renovation at my office, which is going to result in a ...
2
votes
2answers
515 views

Robot Datacenter Automation, can it be done? [closed]

To take the concept of automation to the most time consuming part of an IT infrastructure, rack and stack of a datacenter. What if there was a fully automated system of robots in a datacenter that was ...
1
vote
2answers
3k views

Data center vs Data warehouse

I've heard both of these terms used frequently. What is the difference between a Data center vs. a Data warehouse? Are these terms interchangeable?
0
votes
4answers
405 views

Datacenter power failure failover

We recently had our datacenter's power go. We are protected by an SLA and use DNS to redirect users when a failure is detected. DNS isn't designed to do this by design. Is this the most practical way ...