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

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1answer
321 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 ...
4
votes
2answers
331 views

How to simulate air flow in a datacenter? [closed]

I have an idea for a datacenter architecture which, I believe, would be very effective in terms of passive cooling. I need to do air flow simulations to be sure that the idea is as great as I ...
10
votes
1answer
273 views

Standard Bolt Pattern for Racks in Datacenters

Is there a "standard" way of bolting racks down that is interchangeable between vendors? At our datacenter we've standardized on a Damac rack for our builds. Because we're building in volume, the ...
1
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1answer
45 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 ...
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1answer
434 views

What would my over subscription be for my network?

I have 24 racks with 20 servers each connecting to 2 by 48 x 10G switches in each rack (NIC teaming). The switchs then connects to another 2 by 48 x 10G switches in 2 aggregation racks. What would ...
2
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1answer
379 views

I'm considering using a Mineral-oil as a coolant for a submerged server. What fire precautions should I take?

I'm investigating different ways to safely and efficiently cool down one of our servers that uses two GPU cards for intense renderings that takes hours to complete. The overall system wattage is ...
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1answer
859 views

Server 2012 Datacenter: does Microsoft charge per core or per processor? [duplicate]

For Server 2012 Datacenter do they charge per 2 physical cpu or per 2 cores? Example if I have an EVGA Classified SR-X motherboard with 2 Intel Xeon E5-2687W, 8 core cpus, will I only need to buy one ...
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1answer
111 views

I have a firewall that supports 1Gbit ethernet ports but 1.4Gbit of traffic, can I make use of a 10Gbit pipe from the router in this case?

We're putting up a rack of servers in a datacenter which provides us either a 1Gbit pipe or 10Gbit pipe from the router (our choice, our package includes 10Gbit). But if we have a firewall which ...
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0answers
122 views

Is the Foundry BR-FGS624P switch stackable by adding the 10GbE ports, or is it never stackable?

I'm looking at buying a Foundary BR-FGS624P 24 port switch which will suit our purposes now, but thinking into the future I might like to stack the switch when we add a few more servers to our rack. ...
12
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1answer
1k views

What Data Center room routine maintenance tasks should be done?

Beyond the work done "inside" equipment (administration, programming, network config) there exists physical equipment and rooms. This physical room equipment needs care and feeding as well on a ...
24
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1answer
628 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 ...
1
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1answer
334 views

MySQL Data Center Replication [closed]

I have a (possibly not so quick question) about the best way to set up a 'global' MySQL Database. I basically need to set up multiple MySQL servers in separate geographical locations that will all ...
0
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3answers
89 views

How to find best datacenter in China? [closed]

I guess this question would be applicable for most countries but in this case, more specifically: if you do not speak Chinese how to find top tier data centers in China?
1
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2answers
70 views

Is it necesary to purchase two Datacenter licences if your virtualization infrastructure includes two physical servers? [duplicate]

Possible Duplicate: Can you help me with my software licensing issue? We are looking to set up a virtualization environment. As I assume is standard this will include more than one ...
2
votes
2answers
683 views

Place server machines in relatively humid underground room during the summer?

My company has around 20 servers which we want to operate in an underground room, where the temperature over whole year ranges from 5°C to 28°C. The only thing I am worried about is that in ...
17
votes
8answers
2k views

Using Y power cables in a datacenter

I've always assumed that using Y cables from the PDU to redundant PSUs in the same server was totally acceptable practice, however I was recently speaking to someone that said that their colo wouldn't ...
8
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3answers
1k 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 ...
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0answers
130 views

Rack tables across multiple data centers

Does anyone know how to create multiple site in RT? It works great for our current single data center set up however we are expanding to add a few more datacenters and I would like to have one ...
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votes
1answer
306 views

software for rack visualisation [closed]

Can you recommend any (preferably open-source) software for server racks visualization? Ideally it should be able to draw cable links between pieces of equipment, and should be scriptable to some ...
1
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1answer
218 views

Server room near the transformer units

Need to clarify what problems may arise from servers in the server room when a transformer station is at a distance of 10 meters. thanks.
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3answers
122 views

How can I avoid having to tell my clients to modify their domains' DNS settings? [closed]

My web application requires that clients point their A records for their domains to an IP address that I tell them to point them too. Later, when I need to scale from 2 servers that I currently have ...
2
votes
1answer
68 views

Hosting websites in our Workplace custom-built datacentre

I'm faced with unique learning opportunity at work at the moment. Due to the slowdown (amongst other reasons), the powers that be at my office have decided to abandon our shared hosting providers ...
15
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2answers
402 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 ...
1
vote
1answer
143 views

How Does EoR Design Work with Multi-tiered Data Center Topology

I just did a ton of reading about the different multi-tier network topology options as outlined by Cisco, and now that I'm looking at the physical options (End of Row (EoR) vs Top of Rack(ToR)), I ...
3
votes
3answers
354 views

Why are the prices for broadband bandwidth at data centers much higher than consumer/small business offerings? [closed]

The prices for broadband bandwidth at data centers are sometimes as much as 10x higher than for a typical small business/consumer connection, at least where I live. Now, I understand those are two ...
4
votes
4answers
151 views

Process for configuring network settings on a headless rack mount device

I'm with a small company that plans to sell a rack mounted network appliance which is configurable via a web interface (think of a router configuration page sort of deal), and I'm wondering in large ...
5
votes
2answers
759 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, ...
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2answers
119 views

Match logical and physical network interface names

Our company planned to move their hundreds of servers (virtual and physical) to a brand new datacenter infrastructure. First, we have created a spreadsheet which lists the configuration of all the ...
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votes
2answers
130 views

What's the deal with using unreliable green energy in datacenters? [closed]

The news say that Google now uses 48 MW of electricity produced by wind turbines to power one of its datacenters. I've always heard that "green" energy is great, but it is unreliable - wind doesn't ...
2
votes
1answer
114 views

Forensics on Virtual Private servers [closed]

So these days with talks about having hacked machines being used for malware spreading and botnet C&C, the one issue that is not clear to me is what do the law enforcement agencies do once they ...
5
votes
3answers
3k 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 ...
217
votes
15answers
13k 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 ...
11
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1answer
2k views

What is the proper way to manage cabling behind patch panels?

I have a 4-post 19" rack with a 72-port 2U quickport patch panel where horizontal structured cabling terminates. The cables are bundled and enter the rack at the rear. From the back of the rack, ...
1
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1answer
72 views

How to share data across two data centers? [closed]

Let say I have 2 data centers in 2 different cities. Datacenter A to serve city A, and datacenter B to serve city B. How do I achieve the following scenarios: Redirect users in each city to ...
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votes
1answer
2k views

What are EN, EP and EX platforms?

I keep hearing all these terms - EN, EP and EX level servers. What do these terms mean? What are they classifications of? How are they demarcated from one another? How are they different from the thin ...
7
votes
3answers
787 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 ...
13
votes
2answers
11k views

How to manage a global VM startup order across the whole datacenter?

Suppose you have a fully virtualized VMware infrastructure: ESXi, vCenter, vMotion, HA, DRS, the whole package. Inside, you have lots of VMs, which at any given time may reside on one host or another ...
2
votes
1answer
1k views

How do I choose compatible rails for rack mounting my servers?

I am purchasing a rack mounted server and I have the option of also purchasing one of two types of railings: Rapid Rails for Dell Rack Versa Rails, Round Hole Universal Is there any difference ...
47
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 ...
2
votes
4answers
1k 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 ...
1
vote
1answer
266 views

Does Windows Datacenter Edition get patched centrally

I'm running an Amazon EC2 Windows 2008 Datacenter Edition instance. I tried to run Windows update on it a couple of times but it just seems to hang. Does the Datacenter edition get patched centrally ...
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votes
1answer
837 views

What are volume servers?

I am currently reading a lot literature about data centers. I often read the term "volume server" which seem to be some kind of standard server that we can rent today. However, I am not really sure ...
1
vote
1answer
147 views

Dell Blades or C-Series Rack servers for datacenter virtualization project [closed]

We have customers infrastructure hosted on physical HP boxes across several racks and finally we are planning to migrate them to Vsphere.Data is stored on NFS SAN.It was suggested to use c-Series Dell ...
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2answers
116 views

How to treat a request in DHCP from an unknown host?

I have quite few dhcp request from unlocated hosts, like: dhcpd: DHCPDISCOVER from 00:25:90:54:91:b7 via eth0: network eth0: no free leases Whats the best way to locate the host querying the dhcp? ...
3
votes
2answers
366 views

Wattage Per Square Feet as a Measurement

I am used to looking at collocation providers where in U.S. are given as AMPs per rack (assuming 120V). I am looking into a place that rents space for servers which is listed as: "250 Watts per ...
1
vote
4answers
465 views

Is 2-5 ms between web and database server appropriate? (Different Datacenters)

I currently have a dedicated web and database server running in datacenter (DC) 1. Im about to expand with yet another web server in datacenter 2 that will talk to the db in DC 1. The latency ...
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votes
1answer
211 views

What software can I use for datacenter hardware monitoring? [duplicate]

Possible Duplicate: What tool do you use to monitor your servers? We've got a mix of Dell and HP servers in a colo and I'd like to have a hardware monitor so that we know about failed ...
1
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2answers
64 views

Why would a company treat its web server hardware setup as confidential? [closed]

Recently I was reading a blog post (in Russian) about a huge datacenter. Commenters asked to show shots of racks with equipment installed by customers. The authors declined saying that customers ...
7
votes
3answers
341 views

DataCenter Certification

What kind of acceditations exist for a datacenter? I am not asking about process accreditation. Not ITIL, not ISO 20000. I am asking about an accreditation for the datacenter itself. As far as I can ...
0
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2answers
144 views

What's difference between private datacenter, and public cloud datacenter [closed]

I'm very confused to understand what a cloud datacenter actually is. In my experience, the main services of a data center are the following: Renting rackspace Rack colocation Server locating on ...