|By Hovhannes Avoyan||
|November 7, 2012 08:38 AM EST||
In this article I would like to share the new things in Windows Server 2012 that grabbed my particular attention. It’s not a full list of the new features, which you can find on the Microsoft official site. It’s more like a summary of the more advanced and intriguing new features.
Windows Server 2008 R2 supported live migration, but only if the virtual hard disk’s location remained the same, i.e. SAN. What Windows Server 2012 brings to the scene is the ability to move a virtual machine outside a cluster environment to any other Hyper-V host. You can even move several machines at the same time. The only thing you would need is a shared folder accessible from both locations and then you could move the storage (storage migration) of a virtual machine to a new one. Windows Server 2012 even offers you the ability to do a “Shared Nothing” live migration, meaning the ability to migrate a virtual machine from one host to another, even if they have no connectivity between themselves.
In a typical virtualization infrastructure there are multiple virtual machines sharing the same physical network card. In periods of heavy loads one virtual machine can manipulate the traffic if it needs it, leaving insufficient traffic for the rest of the machines. In Windows Server 2008 R2 you were able to set the maximum bandwidth for each virtual machine, meaning that they couldn’t occupy more of their allocated bandwidth, even if they needed to. However, it was inefficient in situations when the other virtual machines didn’t actually need the rest of the bandwidth. Setting a minimum bandwidth in Windows Server 2012 allows you to specify how much bandwidth each virtual machine needs in order to function. However, these constraints are applied only when there is a conflict in the bandwidth needs of virtual machines. If there is free bandwidth each virtual machine may use it until other virtual machines that are under their minimum bandwidth need it.
Let’s say we have a 1 Gigabit Ethernet card. We specify the minimum bandwidths for Virtual Machine (VM) 1, VM2, and VM3 to be respectively 500 Mb, 300 Mb, and 200 Mb (the sum can’t exceed the total bandwidth of the Ethernet card). In a moment of less activity from VM2 and VM3, VM1 uses 700 Mb of the available bandwidth, VM2 and VM3 use 100 Mb each. However, in the next moment a transaction is processed to VM2 and it needs all its available bandwidth. When that happens, VM2 will first occupy the available 100 Mb, but because it still needs more bandwidth and it’s under its minimum bandwidth of 300 Mb, V1 (as it exceeds its minimum bandwidth) will have to give VM2 100 Mb more.
What it allows you to do is to have multiple virtual networks, possibly with the same IP address schemes, on top of the same physical network. It is really useful for cloud services providers. However, it can be used in businesses as well, for example when HR or Payroll traffic should be totally separated from the rest of the traffic. It also allows you to move virtual machines wherever you need them, despite the physical network, even to the cloud. For this to be possible each virtual machine has two different addresses for each network adapter. One is used for communication with the rest of the virtual machines and hosts in that network and is called Client Address. The other one is called Provider Address and it’s used for communications on the physical network only. These addresses are given so that different clients/departments have specific addresses so that the provider knows which traffic comes from which client/department. This way, the traffic is completely isolated from any other traffic on the physical network.
It allows you to easily do your capacity planning, because it collects information for the use of resources of a virtual machine throughout a period of time. Furthermore, Windows Server 2012 introduces the concept of resource pools. They combine multiple virtual machines belonging to one specific client or used for one specific function and the resource metrics are collected on a per user/function basis. This technique is helpful for IT budgeting needs and for billing customers. The metrics usually being collected are: Average CPU use (for a selected period of time); Average memory use; Minimum memory use; Maximum memory use; Maximum disk allocation; Incoming network traffic; Outgoing network traffic.
Dynamic Host Configuration Protocol (DHCP)
A rogue DHCP server is a fake server which is connected to the network, collects DHCP server requests and responds with incorrect addressing information. Active Directory protects its DHCP service by not allowing other DHCP servers to operate on the network until they are authenticated. However, this does not apply for non-Microsoft-Windows DHCP servers. They could still connect to the network and give addresses. Windows Server 2012 limits this by allowing you to specify which ports can have DHCP servers attached. So if the intruder is attached to any other port, its DHCP fake server packets would be dropped.
They are mainly used when you need point-in-time recovery in case of an error. For example, when you apply a service pack on a production server, you may want to give yourself a backdoor in case something bad happens. You take the snapshot before the service pack installation and if needed, you recover the server with it. What happens if you don’t need it? You’ve monitored the server for a while and everything seems normal after the patch? You don’t need the screenshot anymore. However, in Windows Server 2008 R2 you couldn’t just get rid of it. You would have to pause the virtual machine for a while, making it inaccessible. Windows Server 2012 has a new feature, called Hyper-V Live Merge, which allows you to release the snapshot while the machine continues to run.
Stay tuned to Monitis for our future articles on Windows Server 2012. We will take a deeper look into these and some more advanced new features.Share Now:
The 5th International DevOps Summit, co-located with 17th International Cloud Expo – being held November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA – announces that its Call for Papers is open. Born out of proven success in agile development, cloud computing, and process automation, DevOps is a macro trend you cannot afford to miss. From showcase success stories from early adopters and web-scale businesses, DevOps is expanding to organizations of all sizes, including the...
Apr. 27, 2015 02:00 PM EDT Reads: 2,240
Public Cloud IaaS started it's life in the developer and startup communities and has grown rapidly to a $20B+ industry, but it still pales in comparison to how much is spent worldwide on IT: $3.6 trillion. In fact, there are 8.6 million data centers worldwide, the reality is many small and medium sized business have server closets and colocation footprints filled with servers and storage gear. While on-premise environment virtualization may have peaked at 75%, the Public Cloud has lagged in ado...
Apr. 27, 2015 02:00 PM EDT Reads: 1,322
Dave will share his insights on how Internet of Things for Enterprises are transforming and making more productive and efficient operations and maintenance (O&M) procedures in the cleantech industry and beyond. Speaker Bio: Dave Landa is chief operating officer of Cybozu Corp (kintone US). Based in the San Francisco Bay Area, Dave has been on the forefront of the Cloud revolution driving strategic business development on the executive teams of multiple leading Software as a Services (SaaS) ap...
Apr. 27, 2015 02:00 PM EDT Reads: 1,579
Chuck Piluso will present a study of cloud adoption trends and the power and flexibility of IBM Power and Pureflex cloud solutions. Speaker Bio: Prior to Data Storage Corporation (DSC), Mr. Piluso founded North American Telecommunication Corporation, a facilities-based Competitive Local Exchange Carrier licensed by the Public Service Commission in 10 states, serving as the company's chairman and president from 1997 to 2000. Between 1990 and 1997, Mr. Piluso served as chairman & founder of ...
Apr. 27, 2015 01:00 PM EDT
Database apps on mobile devices shouldn't stop working when there's limited or no network connectivity. In his session at 16th Cloud Expo, Bradley Holt, a Developer Advocate for IBM Cloudant, will discuss how to bring data stored in a cloud database to the edge of the network (and back again), whenever an Internet connection is available. He will demonstrate techniques for replicating cloud databases with mobile devices in order to build offline-enabled mobile apps that can provide a better,...
Apr. 27, 2015 12:35 PM EDT
Modern Systems announced completion of a successful project with its new Rapid Program Modernization (eavRPMa"c) software. The eavRPMa"c technology architecturally transforms legacy applications, enabling faster feature development and reducing time-to-market for critical software updates. Working with Modern Systems, the University of California at Santa Barbara (UCSB) leveraged eavRPMa"c to transform its Student Information System from Software AG's Natural syntax to a modern application lev...
Apr. 27, 2015 12:15 PM EDT Reads: 1,785
The 17th International Cloud Expo has announced that its Call for Papers is open. 17th International Cloud Expo, to be held November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, brings together Cloud Computing, APM, APIs, Microservices, Security, Big Data, Internet of Things, DevOps and WebRTC to one location. With cloud computing driving a higher percentage of enterprise IT budgets every year, it becomes increasingly important to plant your flag in this fast-expanding bu...
Apr. 27, 2015 12:00 PM EDT Reads: 2,329
ProfitBricks has launched its new DevOps Central and REST API, along with support for three multi-cloud libraries and a Python SDK. This, combined with its already existing SOAP API and its new RESTful API, moves ProfitBricks into a position to better serve the DevOps community and provide the ability to automate cloud infrastructure in a multi-cloud world. Following this momentum, ProfitBricks has also introduced several libraries that enable developers to use their favorite language to code ...
Apr. 27, 2015 12:00 PM EDT Reads: 1,708
The IoT Bootcamp is coming to Cloud Expo | @ThingsExpo on June 9-10 at the Javits Center in New York. Instructor. Registration is now available at http://iotbootcamp.sys-con.com/ Instructor Janakiram MSV previously taught the famously successful Multi-Cloud Bootcamp at Cloud Expo | @ThingsExpo in November in Santa Clara. Now he is expanding the focus to Janakiram is the founder and CTO of Get Cloud Ready Consulting, a niche Cloud Migration and Cloud Operations firm that recently got acquir...
Apr. 27, 2015 12:00 PM EDT Reads: 1,678
In 2015, 4.9 billion connected "things" will be in use. By 2020, Gartner forecasts this amount to be 25 billion, a 410 percent increase in just five years. How will businesses handle this rapid growth of data? Hadoop will continue to improve its technology to meet business demands, by enabling businesses to access/analyze data in real time, when and where they need it. Cloudera's Chief Technologist, Eli Collins, will discuss how Big Data is keeping up with today's data demands and how in t...
Apr. 27, 2015 11:00 AM EDT Reads: 1,478
SYS-CON Media announced today that @ThingsExpo Blog launched with 7,788 original stories. @ThingsExpo Blog offers top articles, news stories, and blog posts from the world's well-known experts and guarantees better exposure for its authors than any other publication. @ThingsExpo Blog can be bookmarked. The Internet of Things (IoT) is the most profound change in personal and enterprise IT since the creation of the Worldwide Web more than 20 years ago.
Apr. 27, 2015 11:00 AM EDT Reads: 2,573
From telemedicine to smart cars, digital homes and industrial monitoring, the explosive growth of IoT has created exciting new business opportunities for real time calls and messaging. In his session at @ThingsExpo, Ivelin Ivanov, CEO and Co-Founder of Telestax, shared some of the new revenue sources that IoT created for Restcomm – the open source telephony platform from Telestax. Ivelin Ivanov is a technology entrepreneur who founded Mobicents, an Open Source VoIP Platform, to help create, de...
Apr. 27, 2015 11:00 AM EDT Reads: 5,181
As Marc Andreessen says software is eating the world. Everything is rapidly moving toward being software-defined – from our phones and cars through our washing machines to the datacenter. However, there are larger challenges when implementing software defined on a larger scale - when building software defined infrastructure. In his session at 16th Cloud Expo, Boyan Ivanov, CEO of StorPool, will provide some practical insights on what, how and why when implementing "software-defined" in the dat...
Apr. 27, 2015 11:00 AM EDT Reads: 1,633
SYS-CON Events announced today that robomq.io will exhibit at SYS-CON's @ThingsExpo, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. robomq.io is an interoperable and composable platform that connects any device to any application. It helps systems integrators and the solution providers build new and innovative products and service for industries requiring monitoring or intelligence from devices and sensors.
Apr. 27, 2015 11:00 AM EDT Reads: 2,105
SYS-CON Events announced today that MangoApps will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY., and the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. MangoApps provides private all-in-one social intranets allowing workers to securely collaborate from anywhere in the world and from any device. Social, mobile, and eas...
Apr. 27, 2015 11:00 AM EDT Reads: 3,591
Containers and microservices have become topics of intense interest throughout the cloud developer and enterprise IT communities. Accordingly, attendees at the upcoming 16th Cloud Expo at the Javits Center in New York June 9-11 will find fresh new content in a new track called PaaS | Containers & Microservices Containers are not being considered for the first time by the cloud community, but a current era of re-consideration has pushed them to the top of the cloud agenda. With the launch ...
Apr. 27, 2015 11:00 AM EDT Reads: 2,892
The world's leading Cloud event, Cloud Expo has launched Microservices Journal on the SYS-CON.com portal, featuring over 19,000 original articles, news stories, features, and blog entries. DevOps Journal is focused on this critical enterprise IT topic in the world of cloud computing. Microservices Journal offers top articles, news stories, and blog posts from the world's well-known experts and guarantees better exposure for its authors than any other publication. Follow new article posts on T...
Apr. 27, 2015 11:00 AM EDT Reads: 2,117
SYS-CON Events announced today that Litmus Automation will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Litmus Automation’s vision is to provide a solution for companies that are in a rush to embrace the disruptive Internet of Things technology and leverage it for real business challenges. Litmus Automation simplifies the complexity of connected devices applications with Loop, a secure and scalable clou...
Apr. 27, 2015 11:00 AM EDT Reads: 1,758
How do you securely enable access to your applications in AWS without exposing any attack surfaces? The answer is usually very complicated because application environments morph over time in response to growing requirements from your employee base, your partners and your customers. In his session at 16th Cloud Expo, Haseeb Budhani, CEO and Co-founder of Soha, will share five common approaches that DevOps teams follow to secure access to applications deployed in AWS, Azure, etc., and the frict...
Apr. 27, 2015 10:30 AM EDT Reads: 1,674
While DevOps most critically and famously fosters collaboration, communication, and integration through cultural change, culture is more of an output than an input. In order to actively drive cultural evolution, organizations must make substantial organizational and process changes, and adopt new technologies, to encourage a DevOps culture. Moderated by Andi Mann, panelists will discuss how to balance these three pillars of DevOps, where to focus attention (and resources), where organizations m...
Apr. 27, 2015 10:15 AM EDT Reads: 2,051