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

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3
votes
6answers
3k views

Lightweight Linux DNS

Can anyone recommend a lightweight Linux DNS server, which would be suitable for the data center? EDIT: We speak about data-center typically within 10 - 20 servers, up to 100 at maximum. For larger ...
10
votes
6answers
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 ...
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 ...
0
votes
2answers
31 views

Migrating to a Data Centre

I am a software developer. My company is planning to take advantage of visualization and host its servers at a data center. I understand the difference between the cloud and self hosting at a data ...
28
votes
3answers
2k views

Illegal activities prevention system (child pornography, animal cruelty, …)

It is a very sensitive topic that requires a solution from our end. I have few servers that I rent to few people. I have all legal permissions and rights to scan over the servers. I want to prevent ...
0
votes
0answers
12 views

Tool for helping where new datacenter components should be placed? [migrated]

I am looking for a software tool helping me to find an optimized place where new datacenter components, such as servers and network devices, should be placed. Important criteria are: climate of ...
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 ...
5
votes
2answers
384 views

Headset for phone calls in the datacenter

Datacenters are noisy places. On occasion it is necessary for an administrator or technician to troubleshoot a problem in the datacenter while on a phone call or conference call. Unfortunately, ...
0
votes
0answers
6 views

How can I enable debugging in zte switches running

We have recently bought some zte switches, they are affordable and have quite a lot of features. product page. At the moment we are having some issues with STP configurations when connected to a ...
6
votes
3answers
775 views

Prevent being locked out when configuring SSH and iptables [duplicate]

When you are configuring iptables or SSH over SSH and the data center is thousands of kilometers away (and getting someone there to plug in a KVM is hard), what are some standard practices to prevent ...
1
vote
2answers
40 views

ip recognition is different

some months ago i bought a dedicated server from usa (http://www.dacentec.com/) datacenter. my ips are look like this : 162.248.243.blo blo blo when i check my ip in this site : ...
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 ...
2
votes
4answers
461 views

Monitor bandwidth usage of a datacenter

I would like to know what application is best for measuring bandwidth usage in large datacenters. Our company is in the process of setting up a DC which will have around 1000 physical servers. We ...
6
votes
3answers
1k views

Open source DCIM stack?

Our 500-server data center is growing quickly and my manager has started investigating using a specialized Data Center Infrastructure Management (DCIM) package to help manage constraints. DCIM ...
0
votes
1answer
41 views

Improving “first copy” timing to distant data center?

Background: Our production rollouts comprise of below high-level steps. Take golden copy of code from single staging source. Stage code to multiple datacenters. Modify the staged code to have ...
-1
votes
2answers
75 views

Upgrade existing Windows 2012 Datacenter to Windows 2012 Datacenter R2 [closed]

I am currently using Windows 2012 Datacenter and I would like to upgrade it to the Datacenter 2012 R2 version. Is the upgrade free from Microsoft? Or do I have to buy either an upgrade version or a ...
0
votes
1answer
91 views

What are the benefits of having a data center located geographically far away from your customer's office? [closed]

Was just reading through an article on data centers as linked: http://www.theage.com.au/it-pro/business-it/what-to-look-for-in-a-data-centre-20131122-hv3qj.html Appropriate quote from article below: ...
5
votes
1answer
86 views

Using more than 80% power on a circuit in a disaster scenario

We currently have two cabinets of equipment at our datacenter, and each cabinet is served by two 30A circuits. The facility is relatively new, and each circuit is (supposedly) redundant at the source. ...
2
votes
1answer
38 views

Confused about horizontal scalling

Please correct me if I am wrong but I guess handling more requests and load by adding more machines or balancing the load between multiple servers is horizontal scalling. So, if I add more servers, ...
1
vote
1answer
97 views

desperately need 110v from a 208v pdu [closed]

I'm in a bit of a pickle... We're moving a client's infrastructure to a colocation facility. We have redundant 208v/30amp PDUs. While installing today, we realized that the client had a small ...
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 ...
19
votes
4answers
870 views

What to look for in a datacentre ethernet switch

This is a Canonical Question about choosing a network switch for a datacentre When shopping for a networking switch that's going to be going into the top of a datacentre rack, what specific ...
44
votes
8answers
2k views

How is fire spread in server rooms and datacenters?

Every now and then I read that a severe fire has happened in some datacenter, lots of equipment has been damaged and customers have gone offline. Now I wonder what is there to support and spread fire? ...
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 ...
1
vote
2answers
135 views

Individual licenses needed for guests on 2012 datacenter? [duplicate]

I think I may not be 100% clear on Microsoft's licensing model for Server 2012 Datacenter edition. I have read that datacenter entitles you to run unlimited VMs, but Standard only allows you to run ...
1
vote
0answers
110 views

How can i detect and diagnose local network problems on a multi-server environment?

I'm a software engineer who trying to detect (and solve if possible) weird local networking problems since 2 weeks on multi-server hosting environment. We bought 3 dedicated boxes with 32GB ram 8 ...
7
votes
3answers
475 views

Source of PDU De-Rating?

In researching PDU's I have noticed most cite a derated current at the 80% level. For example, 30A is derated to 24A: Tripp Lite: Raritan: Does anyone have anything that shows what agency this ...
1
vote
1answer
37 views

IBM Tivoli Reclaim vs Update

What is the difference between TSM reclaim vs update? I have accidentally run the reclaim command on my offsite pool? Is it fine to run the reclaim command on offsite pool or is there a bad impact by ...
3
votes
5answers
190 views

Multiple electrical supplies in a server room

Our server room has four cabinets (not fully utilized) and is supplied by several electric circuits from two different electrical services. Some of the equipment is 208V from a 3-phase service and ...
0
votes
1answer
84 views

Changing ip address of exchange server 2007

We've been planning to move our Exchange Server 2007 organization to a new data center. We're physically moving all our servers and assigning them new IP addresses.I've done literally all procedures ...
0
votes
2answers
255 views

Move VMDK files to different datacenter [closed]

I am looking for a possible methods to migrate VMs from vSphere 4.1 to new vSphere 4.1. What is the best way to do this minimal downtime? I want to know how to migrate an virtualized active directory ...
1
vote
2answers
56 views

Any drawbacks for using same time zone configuration in Data Centers across time zones? [duplicate]

I operate almost entirely in one time zone. Supposing a Data Center in another time zone, it would make sense to configure the machines in that data center to use my time zone, and not local. Are ...
-1
votes
1answer
200 views

Datacentre Rack naming convention with flexibility for reassignment of server roles [closed]

We are just shifting across to a new rack and until now have used names of cartoon characters. This is not going to work anymore, and need a better naming convention. Physically i would like to name ...
0
votes
2answers
89 views

Can a datacenter read my passwords if I'm using KVM over IP? [closed]

Is it truth that datacenters can read my passwords over KVN over IP interface when I ask them to connect it and I'am forced to enter ssh pass/encryption pass (OS install,etc) ? I colocated the server ...
1
vote
2answers
159 views

How to connect a data center network to a cloud provider with VPN

We have our production environment on EC2 classic, and we have a lease on some servers in a managed hosting environment. We would like to put a portion of our backend service in the data center, but ...
6
votes
1answer
189 views

Do I have an under-voltage issue in my data room I need to address?

I recently had a UPS fail to do its job during business hours because I didn't realize it had already reached the end of its useful life. Yes, the battery was old and, yes, I should have manually ...
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 ...
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 ...
-1
votes
2answers
67 views

Remote administration in datacenters [closed]

Given that running a data center presumably requires BIOS level access to each server, which protocols (hardware & software) are most commonly used? I understand that KVM switches are fairly ...
1
vote
3answers
95 views

Do worldwide datacenters have global/standard unique code or name?

Some datacenter providers have 3-4 letter codes for their locations. However, it seems there is not international standards for this?
0
votes
1answer
299 views

How disable notifications in Centreon through Nagios?

I would like to disable some services notifications in Centreon through Nagios web interface. Does anybody know how do that in Nagios ?
0
votes
2answers
183 views

It is possible to visualize the load of an APC switched PDU for a specified period of time?

There are some APC PDUs AP7953 and now we think about a solution for check the load over a period. We don't need a 100% correct Value only a trend on which hours we have more load to localize peeks in ...
4
votes
2answers
400 views

What were your server room pain points, big wins and must haves? [closed]

Like many people on here I suspect, our server room has evolved over time. At the beginning we had a single server running Microsoft Small Business Server 2000 and it sat in the corner plugged in ...
2
votes
4answers
720 views

How many hp dl360 g7 in a rack?

It might sound as "how long is a piece of string"? In my current job the process is to leave 1U spacing, with no blinders, between servers; this incurs a considerable loss of space, no event sparking ...
0
votes
1answer
131 views

Load balancers, multiple data centers and url based routing

There is one data center - dc1. There is a business need to setup another data center - dc2 in another geography and there might be more in the future say dc3. Within the data center dc1: There are ...
0
votes
1answer
178 views

Windows Server 2012 Standard/Datacenter Additional License Install (4 cpu) Activate

I have a 4 x 10 core (80 threads) machine. I've installed Windows Server Datacenter 2012 and now I'm only able to use 2 CPUs. Windows Server Datacenter 2012 only allows 2 CPUs per license key. I do ...
23
votes
6answers
4k views

Best practices for power cabling racks in DC

With network cables it is easy. I use velcro-ties, coloured cables, 0U vertical cable organizers from APC on side of the rack -- easy and neat. However with power cables it was always giving me ...
1
vote
0answers
23 views

Can Forefront TMG server as an outbound chacheing solution to a web farm

We are to deploy several web servers in a datacenters. All running Windows 2K12 + IIS. I am not very familiar with data center best practices for deploying and maintaining web servers. In the office ...
0
votes
2answers
86 views

What are good ways to stress-test machines in data center clusters?

We recently got a bunch of machines in data center and want to do stress testing for drive failures. How to stress test for drive failures. Are there any tools available? Are there any other ...
23
votes
1answer
555 views

Zinc Whiskers in Data Centers

A message thread on this site from 2010 through an update in 2012 was on a server room that was closed due to zinc whiskers and they thought the flaking was from access flooring & its support. I ...