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 by Woody Ferrell

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Wednesday
Nov302016

DOSarrest DDoS Mitigation Service

DOSarrest Internet Security offers an enterprise-level, cloud-based website protection service for TCP ports 80 and 443. Set-up is quick and easy and all that is required is your IP address and domain name. They can have a website fully functional and protected in approximately 15-minutes. Ok, how do they do it? Well, it's a reverse proxy service and because it is cloud-based you do not require any hardware or appliance. DOSarrest will provide you with a virtual IP address and then you will make a DNS change to direct your A record or CNAME to the new VIP and set your TTL for 300sec. Upload your SSL Certificate through the secure portal and that's it!

They offer 24/7 phone support with a Security Analyst so you are always speaking with someone that can get results without esculation. I have experience with this service and I would be happy to discuss the service with you.

Thursday
Jan152015

10 Serious Datacenter Questions

10 Critical Questions to Ask Your Next Data Center Manager

Your company has worked hard to create a mind-blowing cloud application. You’re ready to take it to the next level, but you need to make sure your data center can handle the load. Asking these 10 critical questions will help you make certain your next data center is ready for the job.

About the company

1. Are the data centers certified and audited each year?

Audits and certifications give you a standardized way of reading an independent analysis of the facility’s reliability, security, and quality. For example, many financial institutions will require SSAE 16, while websites that take payments will require the data center to be PCI-DSS compliant.

2. Does your phone support staff have access to technicians around the clock?

When you get an alert at 2am and you need a set of eyes and hands in front of your cabinet, you want to make sure that the person you talk to has access to the right engineer for the job.

3. What training and certifications do your hands-on engineers have?

Data center equipment needs to be serviced at regular intervals. You may also need to have hands and eyes available to work on your machine if you’re not able to be present. If this is the case, you really don’t want a security guard doing this task. You need someone with IT credentials and experience with maintaining network and server equipment. You should ask what types of certifications they are required to have in order to do daytime and nighttime support. If the engineers are well-qualified, this may limit your need to drive in to the data center in the middle of the night.

4. How is your data center protected against natural disasters?

Regardless of where your data center is located, there’s some chance that it will be struck by a natural disaster. These could include snowstorms, hurricanes, earthquakes, wildfires, and tornadoes. Even if the data center is able to survive a massive earthquake, how long can it continue to supply power using its generators with the fuel they already have on-site? Also, how many fuel suppliers are contracted to bring additional fuel during the emergency?

5. During a disaster, how will the data center keep you informed?

In case of a disaster, how will the data center contact all of its customers to let them know there has been an emergency? Also, how will it keep them apprised of the latest status of their data and services?

Carriers

6. Are all of your data centers carrier neutral?

By staying carrier neutral, the data centers can provide multiple carriers in case of an outage. They are also able to use the BGP best past selection algorithm to provide low latency performance.

Security

7. How is the physical security at your data centers?

Typically, security is viewed in two ways, physical and virtual. Since the data center houses your physical servers, they are also responsible for physical security. This may take the form of:

  • Only 2 points of entry and egress
  • ID badge or biometrics
  • Exit only fire doors
  • Lots of security cameras

Employees at the data center should also know all of the emergency protocols.

Power

8. Can the site handle the power requirements necessary for future growth? Also, how much power can be consumed per cabinet?

When evaluating the data center, make sure they can support the power requirements that your servers will need for virtualization. Be very specific because some facilities may indicate 60A per cabinet but they can truly only handle 30 amps primary and 30 amps redundant. Make sure you specify that you will be “consuming” that much power, otherwise you may be limited to only using a portion of your circuits’ capacity.

9. How often is your power switching tested for load performance?

Load testing generators is expensive because of the amount of fuel that is required and the equipment needed for testing. Unfortunately, a simple power outage is not the same as a full load test to see how much load their generator can handle. This type of routine maintenance should be done to ensure that power requirements are met before an emergency.

Cooling

10. How do you handle temperature control in your data center?

Does the data center use cold and hot aisle containment? Alternatively, do they simply try to defuse the hot air with cold air? Find out how they control and monitor temperature. Are they set up to handle the special cooling requirements of high-density cabinets?

 

Friday
Jan022015

How to Protect Your Servers During a DDoS Attack

Every day, servers are attacked. A distributed denial-of-service (DDoS) attack is one in which a multitude of compromised systems attack a single target, thereby causing denial of service for users of the targeted system. The flood of incoming messages to the target system essentially forces it to shut down, thereby denying service to the system to legitimate users. How can you protect your organization against such an attack. Under a large scale attack, your firewall is not going to be able to handle the amount of traffic forced at it. You need a Transit vendor with a large network presence in multiple cities. This means that incoming DDOS attacks arrive through different upstreams and peering connections. In each city, customers are placed behind a firewall and are able to set up their own policies and rules for their incoming traffic. This setup is similar to what many other ISPs do. During regular traffic levels or a low-scale DDOS, there is no real difference between a distributed setup and a normal isp-level shared firewall. But when a sustained DDOS larger than a pre-determined amount occurs, your vendor's network operation center (NOC) is notified. Once they have determined that the attack is sustained, you have the option of going into distributed mode. Once you are in distributed mode, the vendor takes the attacked subnet of IPs and redirects it to the firewall closes to the ingress point of the attack. This distributes the attack so that it is now spread out over the capacity of the entire network instead of targeted towards a single city location.

After the DDOS traffic hits a firewall, it is inspected and dropped if necessary. The legitimate 'scrubbed' traffic is then GRE tunneled back to the city where your servers reside, where it carries on to your network. Your online presence can function normally through most high-level DDOS attacks that would have otherwise crippled your network. The following information is what I need to set-up protection asap when the attack is occuring. Basically, all traffic good and malicious is routed to our routers, where we filter and determine if the traffic is legitimate. All malacious traffic is dropped during one of our many filtering layers, the rest is sent to you from one of our proxy servers. In essence, your web server only communicates with our servers and is hidden from the general internet.

  • Step 1. Obtain a clean IP from your network provider/ISP, preferably one on  different network segment. This new IP Address will be known as your "origin server IP". Configure the fresh/new IP onto your server.
  • Step 2. Let us know via email what your new origin IP is so we can setup the configuration on our side.
  • Step 3. If you require SSL on this server, email us the cert and private key in .PEM format. This should be in plain text and may be copied and pasted and included in the "step-2" email.
  • Step 4. If you have a firewall or other ACL's in your network please ensure that you allow those IP blocks access to your servers and I will need to forward you our IP Blocks so they will have access.
  • Step 5. We will send you and IP Address. Make a DNS change to point your domain(s) to the IP Address we sent you. Ensure your TTL  is set to 5 minutes or less.
  • Step 6. Remove the old IP Address from the server.

At this stage your traffic will start finding it's way to us where we will apply the required filters and send your server the legitimate traffic. One of our engineers will be in communication with you throughtout this process, to ensure everything is functioning as expected.

That's it. All things considered, the whole process should take less than 15-minutes and we provide a 100% money back guarantee. We can be reached at woody(at)globalcoloquote.com.

 

 

Thursday
Nov202014

Runnning Generators in Parallel

Two generators running in parallel or synchronized must be at the same speed and also the same phase to be paralleled. If the neutrals are connected together and then the voltage between the hot legs of the two generators is measured (hot leg to hot leg and not hot to ground), the following conditions will be noted:  In phase:  zero volts 180 degrees out of phase: the sum of the two voltages.    Since the voltages must be the same, this will be 2X the nameplate voltage.  The generators can only be connected together when the voltage between the hots is zero, e.g. in phase.  This suggests a phasing method.  The standard power plant method of synchronizing two generators is to use a very expensive instrument called a synchroscope.  This instrument indicates whether the incoming generator is faster, slower or in phase with the bus.  Since the rotors of power plant generators weigh many tons, the phases must be extremely accurately matched or else the rotor will be forcibly yanked into phase, possibly wrecking the generator.  For small units, we don't need to be so precise.  We can use a pair of lamps.  What you'll need is a couple of lamps hooked in series and connected between the hot lead of the running generator and the hot lead of the newly cranked generator.  You'll also need a switch of some sorts to parallel the units.  If the generators are 180 deg out of phase, the voltage across the lamps will be 2X the nameplate voltage (240 volts in the case of two 120 volt generators.) and the lamps will burn full brilliance.  If the generators are nearly in phase, the lamps will be out because there will be no voltage on them.  If one generator is faster than the other, the lamps will flicker on and off as the gens are in phase one moment and out the next.  The procedure is as follows.  Start the second generator.  The lights will be flickering or slowly coming on and off.  Manipulate the throttle of the incoming generator which ever direction is necessary to slow the flickering.  As the speeds become almost equal, the lamps will stay off for a long period of time and then slowly start lighting, slowly get fully bright and then slowly dim again.  You want to manipulate the throttle until the lamps are off for as long as possible.  You want to close the breaker when the voltage between the generator is the least.  Since the lamps will go out before the voltage reaches zero, you'll want to mentally time the period between going out and coming back on again and close the switch about in the middle.  Once the breaker is closed, the generators are locked together.  Indeed, you could close the throttle of one engine and the coupled generator will motor the engine at precisely the sync speed (3600 RPM for small gens).  If the generators are just a little bit out of phase, then they will be yanked into phase as momentary heavy current flows between them.  And if you close it out of phase, then you have a double voltage short circuit.  Usually there is severe mechanical and electrical damage.  (I heard and saw the results of a 50 MW diesel genset being synched 180 degrees out as the result of reversed leads on the synchroscope.  Literally ripped the stator out of the foundation and twisted the shaft.)  Once the generators are in parallel, the load accepted by each generator is governed by the governor setting.  The generator with the most throttle will accept the most load.  On larger generators, the field excitation is manipulated to control VARs but you don't have that control and so you have to accept what you get.  Actually, the idea of using more than one generator is very good if you only occasionally have a heavy load to drive.  If you bought a generator large enough to run this occasional load, then most of the time it would be running very lightly loaded and thus very inefficiently.  Cranking the second generator for only those occasions when the large load is needed is a good solution.

Thursday
Jan232014

Weehawken NJ, Data Center

Today we provide services at 300 Boulevard East, Weehawken NJ. The services offered are:

  • Co-location
  • Layer-2 and Layer-3
  • Managed Hosting
  • Metro Ethernet
  • DDoS Mitigation

We can be reached at www.300boulevardeast.com or woody@300boulevardeast.com.

Saturday
Jun082013

Iraqi Data Center (update)

We are scheduled to be in Basrah for the installation of the data center infrastruture which includeds the Generators, In-Row Cooling, Roof-Top Condensers, UPS, PDU's, and Cabinets. This infrastructure will support 300+ cameras that will providefacial recognition, license plate recognition, and behavorial patterns that will assist the Iraqi Security Forces with mitigating violence and acts of terrorism throughout the city of Basrah.

Wednesday
Jan162013

Iraqi Data Center Build, Basra Iraq

We are approximately half way on the completion of our project for the Government of Basra. The scope of the project is to provide technology consulting for the infrastructure of the data center that will provide the servers for some security features of the City of Basra. We have been responsible for the sourcing of critical equipment including the UPS, PDUs, In-row Cooling Units, Roof-top Condensers, and the cabinets that will house the 500kW requirement. Working in Iraq has been challenging due to the complexity of shipping equipment into Iraq and the port of Um Qasr. There are few options for importing into the Basra port and the other options involve utilizing trusted sources for logistics in Turkey, Dubai, and Kuwait.

Update: Schneider Electric equipment is scheduled for pickup next week. This is very exciting and looks like if all goes well we will have the container in Um Qasr in 40-45 days. We will be training the 40-security officers on the equipment in Beirut very soon.

Sunday
Feb122012

N+1 Definition and Example

N+1 redundancy is a term that ensures system availability in the event of component failure. In this example, we are referring to a Datacenter environment where the components (N) have at least one independent backup component (+1). N+1 redundancy recognizes that only a small part of any infrastructure system has any chance of failing at once. 2N redundancy completely duplicates the operating infrastructure. If you need 2 generators for backup, you buy 4 generators. If you need 4 cooling units, you buy 8. N+1 redundancy recognizes that only a small part of any infrastructure system has any chance of failing at once. Odds are vanishingly small that you’re going to have 4 cooling units all fail at the same time. For N+1, you consider what are the odds of having more than 1 unit fail, the odds of having another unit fail before you can get the first failure repaired, and the potential impact.

If there is a small chance of 2 generators failing at the same time then go with N+1 while if there is a high probability of 2 generators failing at once then go with 2N. If not needed a 2N, while nice to have in place, would be a waste of time and money which is passed along to customers, goes against a green facility (if operating), or could be used elswhere in your operating budget. If you’re set up is design so absolutely no interruption is critical, such as power, you might run N+2 with 1 spare hot and the other 1 cold. To learn more about our experience with datacenter redundancy and N+1 and 2N cofiguration please visit http://www.globalcoloquote.com or email us at woody@globalcoloquote.com.

 

Wednesday
Nov302011

CDN Services and Features

Several of our clients leverage CDNs for delivery of their static content. Content Delivery Networks (CDN) allow dedicated server administrators to offset some of the load from their servers, using strategically distributed servers hosted by a CDN service. Although the most basic goal is to reduce load on the server, it can also be used proactively to increase overall access speed, increased fluidity of dynamic websites, and reduce bandwidth by serving content to users from locations geographically closer to their connection point.

Some common CDN features include:

On-demand storage – Usually served on a per-gigabyte basis, this can be used for backup, caching, or general storage.

Dynamic site acceleration – Dynamic sites normally require access to a database server and constant on-the-fly creation of web pages. A CDN may offer a method of caching repeatedly accessed pages and even hosting the databases or applications themselves.

Media Delivery – In the world of social media and streaming content, a CDN can deliver HD-quality video, high-quality audio, and other media, without bogging down your servers.

Electronic Software Delivery – If you deal in software, first-time downloads and upgrades can be costly, and bandwidth can add up quickly. CDNs offer affordable delivery systems.

Analytic software – In addition to providing the delivery of content itself, many CDNs also provide analytic services to track your usage statistics, and even provide marketing tips to help you make your content distribution more effective.

Ad Delivery – Some CDNs offer ad services that can distribute your custom ads with little effort on your part.

Using a CDN is a great way to reduce stress on your server’s hardware and also make the distribution of content a less involved process for the already busy system administrator.

Sunday
Jul032011

Metro Ethernet and VLans

We recently completed a requirement for a UK-based company that required a single VLAN between three locations in New York City including their New York office that is located in an older building in SOHO. The challenge in this case was providing access to all three locations using Metro-Ethernet and the ability to provide Dedicated Internet Access at all three locations. We are able to provide our client with Ethernet-over-Fiber (25Mbps) at 25 Broadway (Telehouse), 32 Avenue of the Americas (AMC, CRG-West), and Ethernet-over-Copper at their office in SOHO on a single VLAN with Metro-Ethernet between all locations. To read more about our clients and their positive experiences you can go to our Testimonials page

More and more companies are using Metro Ethernet for all of their office needs including voice, data, and server requirements that are outside of the data center. We are involved in a current project that will utilize BGP in an office environment to provide Internet redundancy between two providers to give them a failover if they loose connectivity with one provider. This requires an ASN (Autonomous System Number) but can easily be set-up using ARIN. If you would like more information or a quote for a similiar set-up please contact me at woody@globalcoloquote.com or 917-710-5226.

Wednesday
Jun152011

New York Metro Ethernet (new service and website)

We are proud to announce our new service and website NEW YORK ETHERNET. We now offer Layer-2 for organizations that would like to connect (2 or more) datacenters or an office and datacenter- all at Layer-2. We also offer Layer-3 to organizations that need 5 Mbps to 1 Gbps of full-duplex Internet Access to their office or remote location. Our Layer-3 Metro-Ethernet comes with two options- (1) Metro-E over Copper with speeds from 5Mbps to 45Mbps. This service is a good alternative to business-grade DSL, Bonded T1's, and DS3's at at fraction of the costs. The second option (2) is Metro-E over Fiber for clients that require 10Mbps to 1Gbps over fiber. The beauty of this service is that we can create separate vlans for voice traffic so you get a dedicated segment of your connection for VoIP and Data applications. Typically, it takes only few hours for a quote and 15-business days (or less) for service. Please contact me if you would like more information. I can be reached at 917-710-5226 or woody@new-york-ethernet.com. 

Thursday
May122011

Hourly Backup for MS-SQL?

Yes! You now have an option for hourly backup for MS-SQL. IBM Tivoli Storage Manager (TSM) allows you to perform online backups and restores of Microsoft SQL Server Databases hourly. Now in addition to daily and weekly backups you have hourly backups available without having to create a flat file. TSM allows reduction of recovery time for your Database to just a few minutes after your Data is compromised. You can have point in time restores within an hour of your lost Database and this is available with any provider using the Tivoli Storage Manager Software and it is available today. Please contact us for a free consultation or if you would like to give it a try. We can load the Client for you or provide you the link to do it yourself.

Friday
Apr152011

Toronto's Green Data Center

Today marks the date of Toronto's First Green Data Center at 20 Pullman Court, Toronto ON (www.20PullmanCourt.com ). We provide co-location, managed-hosting, self-managed hosting, IP Services, and DoS Protection at this location and it is sure to be a big success! There have been limited choices in terms of managed hosting and dedicated hosting providers in Canada, not to mention the requests we get for Green Datacenters in North America. This facility offers a COOL ROOF that reduces the sun's reflection and heat and will feature a redundant cooling system using both a local well for primary water supply and a connection to the city’s water system as a backup. This carrier neutral facility offers the following features:

  • 41,000 sq.ft
  • On-site Parking
  • Loading Dock
  • Customer Lounge
  • Custom Cages
Monday
Jul192010

Datacenters for Gaming Servers 

On Wednesday, May 19th at 10:00am ET, the House Ways and Means Committee will hold a hearing to discuss tax proposals related to legalizing and regulating the Internet gambling industry in the United States. The proceedings will be held in Room 1100 of the Longworth House Office Building. Check out the details of the Ways and Means Committee hearing._ Over the last several years, gaming sites have become a daily activity for office workers, stay-at-home-Moms, and likely it is the number one clicked url in a bookmark folder. All gaming sites are based outside of the United States however 240M gamers are US citizens. The US is not stopping gambling but if they regulate it they can control problem gamblers. Most beneficial is the econmic factor- it will create jobs and there is an obvious tax revenue advantage. Also, off-shore operators are not mandated to have safeguards in place. If the Committee finds that it is in their best interest to legalize Internet gambling it will be very beneficial to the datacenters in the United States that can support the IT requirements of running these sites. The most likely beneficiaries of this movement will be established IT Providers, hardware vendors, and IT Consultants.

 

Sunday
Aug232009

Colocation vs Cloud

Every day we read more about Cloud Computing and the benefits of using Cloud Computing. You have surely heard IBM and Microsoft touting the service. One the leading, or should I say "better known" orgainzations offering Cloud Computing is Amazon's Web Services . Though they tend to focus on the low-end of the market, they are probably the best known. A recent survey by the IT Industry Council (ITIC) found that 85% of companies will not implement either a public or private cloud in 2009 because of fears that service providers may not be able to adequately secure sensitive data. With that said, there are some seemingly obvious advantages to using Cloud Computing like - hardware (server,etc) savings, software (licenses) savings, management and internal resource savings, etc. You would need a consulting company to do the analysis that would take an individual months to evaluate. Well, no worries. McKinsey & Co has done all the work for us and the report is very interesting. The most common thought is "if I don't have to buy any more servers I will save money." Wrong! Your application will need to be re-designed to run in a Cloud environment, tested, re-worked, and stress-tested again. That takes time and labor. In addition to redesign there is managing another vendor relationship, additonal software licenses, data transfer, re-IP, and then there's the provider's longevity. What if they go under? Even a well-executed Disater Recovery strategy will have some issues and even minor challenges will disrupt data flow. The cost to run an application in a Cloud environment would cost double what the same application would cost in a co-location environment! Not only will you not save money, as most Cloud proponents exclaim, but you will lose money. Either way, it will be 3-5 years before anyone other than SMBs begin moving towards Cloud Computing. For more information about this report you can check out The UPtime Institutes review at UptimeInstitue.com. You will need to register but there is a lot of great information there. Or I can be reached at woody@globalcoloquote.com or 917-710-5226.

Tuesday
May192009

10 Great Hosting Questions for IT Staff

If you can get answers from your IT Staff to these 13 questions, you will save yourself a lot of time and maybe a few dollars. The questions are:

  • Does your company have the IT staff / resources to remotely administer a server or managed hosting environment?
  • What would this system we are discussing be used for? What is the application?
  • What type of system architecture do you have in mind (web/app/db server; load balancing; private network)?
  • What are your security requirements?
  • What is the peak number of concurrent sessions that you anticipate for this system?
  • What are your anticipated peak throughput requirements?
  • What is the anticipated monthly transfer usage?
  • What applications will you install on each server?
  • What operating system would you need on each server?
  • What are your requirements for CPU, RAM & HD (capacity & RAID configuration) for each server?
  • Do you require backups on each server? Daily or Weekly?
  • What is your timeline for implementing and moving forward?
  • What is your budget for this project?
Thursday
May072009

DDoS Shield

Last week, one of my clients had multiple DDOS attacks, such as Syn-flood, UDP network attacks, and HTTP get floods at rates of 90K to 700K packets per second. DDos and http get attacks was so large that it shut down their web-servers which resulted in a complete network outage for several days. Once we were notified of the problem, the facility manager, Mike Mazzei and our Engineer, Payam TarverdyanChychi, initiated our DDos Shield service to mitigate their traffic. Our DDos Shield utilizes the latest bleeding edge technology devices which is made up of multiple vendors.

Our DDos Shield uses high end ASIC boards to process/analyze the packetswhich decreases latency when new devises are introduced into the mesh.This allows the security devices to scrub the packets to determine goodvs bad packets based not only on signatures but also behavioral aspectsand sourced based filtering. In a severe attack (over 200KPPS ordepending on how large the traffic rate is) our DDoS Shield will workwith our Cisco/Juniper Routers to distribute traffic over several of our upstream providers to allow multiple ingress points for the attack and as such reduces the changes of saturating any given transit or transport. Once the distributed mode has been activated, all traffic will beautomatically routed within the peer1 backbone and sent to designated locations designed to handle attacks upwards of 10 Million packets/second up to 5gigs/sce. This number will drastically increase in the weeks to come.

This customer operates a social networking site that was enabled during these attacks. Once on our DDoS Shield service he was back up after initiating the service. If you would like more information regarding our DDoS Shield or any of our services you can contact me at woody@globalcoloquote or 917-710-5226.

Thursday
Apr162009

What is "Virtualization"?

Virtualization allows for multiple virtual servers (known as Virtual Machines) to run on a single physical server simultaneously. Our vendors provide virtualization services based on VMwares ESX Server platform, exclusively on a single-tenant model, where the ESX server is dedicated to a given client. Windows and Red Hat Linux are both supported as ‘guest’ operating systems. Virtualization’s most obvious benefit is consolidation of servers, but its less obvious benefits are what make it a truly revolutionary technology for the datacenter: by abstracting the server from the hardware it runs on, Virtual Machines (VMs) become truly portable, allowing them to move from physical server to physical server without reconfiguration, which facilitates rapid provisioning and recovery.

If you would like to know more about virtualization or managed hosting you can contact me directly at woody@globalcoloquote.com or 917-710-5226.

 

Thursday
Apr092009

CDN Costs

I spend a large portion of my day speaking with potential (and existing) clients about our services and pricing components. The pricing components for a CDN are not complex. Basically, it is all based on transfer. The higher the monthly commitment (transfer), the better the rate. The monthly commitment starts at 250GB and goes up to 300TB+ and typically the set-up fee is free unless the client has 10+ Domains and even then it's minimal. There are a few schools of thought about justifying a CDN and most agree that performance is the underlying reason for using a CDN. Using a CDN to increase performance will directly increase the revenue stream. One of my clients addressed this issue in his blog. Steve writes "I’m betting that since the site is that much faster Google will increase the position of our site pages in its SERPs within a month and we’ll see a real return on our CDN investment at that point." It's a basic strategy for a basic concept- increase traffic, increase revenue! It's true that not all sites are geared towards increasing ad revenue based on page views but the same rule applies to any site or business. This I know- Increasing performance of your site will increase traffic, period!

Wednesday
Apr082009

COLOCATION AND POWER

I have been consulting organizations on co-location for almost 9 years now. Mostly in North America and primarily in the U.S. market. With Global Colo Quote, we currently have (17) datacenters and I have consulted and placed clients in all of them. Typically early on in the discussions, the topic of power comes up and it is always a challenge for clients to calculate their power requirements based on the type and size of equipment they are going to be utilizing. Obviously, if a client is bringing hardware in from another facility they can measure their draw in the existing cabinet. But what about the ones ordering new equipment for the first time or coming into co-location from a managed hosting environment? The two most common requests for power is 110v and 208v. There's a big difference in the two and not understanding the difference can be the difference of a few to several thousand dollars per month. Think of it this way- 110v is single-phase power and 208v is two-phase power. For example, a 20amp circuit at 110v is 20amps. A 20amp circuit at 208v is 40amps. At $25/amp for a circuit you could be paying $1,000 a month for one power circuit to power your blades, SAN, etc. As far as servers go, a standard 1U server averages around 2 amps per machine. If we are talking about a 1U server with a single processor pushing less than 1Mbps of bandwidth. The power requirements will go up with machines with more than one processor or pushing more than 1Mbps of bandwidth. Most servers require 110v of power, however the newer blade-type servers will require 220v of power.Most datacenters in the U.S. provide 20 amps of 110v power in each 42U Full Cabinet. Most new clients do not realize that if you are provided a 20 amp circuit in your cabinet you only have 18 amps usable power. Standard U.S. electrical codes restrict breakers to accept more than 20 amps and will typically trip when enough heat is generated on the breaker and that usually happens between 18-20 amps. I always recommend to clients that have mission critical requirements and are pushing near 18 amps to utilize an additional 20 amp circuit in their cabinet. With dual-power supplied servers today, it is also a great fit to have redundant power for the entire cabinet so if you do loose a power supply or trip your breaker you will still have power but unless you shut a machine or two down you are likely to have the same problem with the second 20 amp circuit. This type of configuration is referred to as "A" and "B" power whearas "A" is the primary feed and "B" is a secondary feed coming from a separate UPS for redundancy. I always recommend using a power monitoring PDU ( power distribution unit) to monitor power usage and allow the flexibility to remotley shut down devices as needed. For more information about power usage or questions about co-location or hosting, please contact me at woody@globalcoloquote.com or 917-710-5226.

COLOCATION OPTIONS


Put your servers in one of our datacenters. Global Colo Quote provides you with state-of-the-art Co-location facilities to support your growing online business. Outsourcing your colocation needs to GCQ lets you enjoy exceptional cost-savings and unparalleled reliability for greater peace-of-mind. [more...]

MANAGED HOSTING


Global Colo Quote takes the complexity out of running your online business, so that you can focus on your core business. Our Managed Hosting Quote experts take care of your IT infrastructure requirements to ensure your mission-critical sites are running online all of the time. Our vendors can handle many of your day-to-day system maintenance tasks. [more...]

IP TRANSIT AND DOS PROTECTION


Global Colo Quote offers high performance IP Transit designed for Enterprise applications requiring the highest level of performance and resiliency. Available speeds are 100Mbps up to 10Gbps and commitment levels start at 1Mbps. We offer DoS protection for organizations that are prone to medium to large scale attacks [more...]