|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 3rd International Internet of @ThingsExpo, co-located with the 16th International Cloud Expo - to be held June 9-11, 2015, at the Javits Center in New York City, NY - announces that its Call for Papers is now open. The Internet of Things (IoT) is the biggest idea since the creation of the Worldwide Web more than 20 years ago.
Nov. 28, 2014 08:00 AM EST Reads: 1,651
"We help companies that are using a lot of Software as a Service. We help companies manage and gain visibility into what people are using inside the company and decide to secure them or use standards to lock down or to embrace the adoption of SaaS inside the company," explained Scott Kriz, Co-founder and CEO of Bitium, in this SYS-CON.tv interview at 15th Cloud Expo, held Nov 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
Nov. 27, 2014 07:00 PM EST Reads: 1,866
15th Cloud Expo, which took place Nov. 4-6, 2014, at the Santa Clara Convention Center in Santa Clara, CA, expanded the conference content of @ThingsExpo, Big Data Expo, and DevOps Summit to include two developer events. IBM held a Bluemix Developer Playground on November 5 and ElasticBox held a Hackathon on November 6. Both events took place on the expo floor. The Bluemix Developer Playground, for developers of all levels, highlighted the ease of use of Bluemix, its services and functionalit...
Nov. 27, 2014 07:00 PM EST Reads: 1,943
Some developers believe that monitoring is a function of the operations team. Some operations teams firmly believe that monitoring the systems they maintain is sufficient to run the business successfully. Most of them are wrong. The complexity of today's applications have gone far and beyond the capabilities of "traditional" system-level monitoring tools and approaches and requires much broader knowledge of business and applications as a whole. The goal of DevOps is to connect all aspects of app...
Nov. 27, 2014 06:00 PM EST Reads: 1,709
The 4th International DevOps Summit, co-located with16th International Cloud Expo – being held June 9-11, 2015, at the Javits Center in New York City, NY – announces that its Call for Papers is now 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 world's large...
Nov. 27, 2014 06:00 PM EST Reads: 2,312
SAP is delivering break-through innovation combined with fantastic user experience powered by the market-leading in-memory technology, SAP HANA. In his General Session at 15th Cloud Expo, Thorsten Leiduck, VP ISVs & Digital Commerce, SAP, discussed how SAP and partners provide cloud and hybrid cloud solutions as well as real-time Big Data offerings that help companies of all sizes and industries run better. SAP launched an application challenge to award the most innovative SAP HANA and SAP HANA...
Nov. 27, 2014 05:00 PM EST Reads: 1,702
When an enterprise builds a hybrid IaaS cloud connecting its data center to one or more public clouds, security is often a major topic along with the other challenges involved. Security is closely intertwined with the networking choices made for the hybrid cloud. Traditional networking approaches for building a hybrid cloud try to kludge together the enterprise infrastructure with the public cloud. Consequently this approach requires risky, deep "surgery" including changes to firewalls, subnets...
Nov. 27, 2014 04:45 PM EST Reads: 1,930
Want to enable self-service provisioning of application environments in minutes that mirror production? Can you automatically provide rich data with code-level detail back to the developers when issues occur in production? In his session at DevOps Summit, David Tesar, Microsoft Technical Evangelist on Microsoft Azure and DevOps, will discuss how to accomplish this and more utilizing technologies such as Microsoft Azure, Visual Studio online, and Application Insights in this demo-heavy session.
Nov. 27, 2014 04:45 PM EST Reads: 1,685
DevOps is all about agility. However, you don't want to be on a high-speed bus to nowhere. The right DevOps approach controls velocity with a tight feedback loop that not only consists of operational data but also incorporates business context. With a business context in the decision making, the right business priorities are incorporated, which results in a higher value creation. In his session at DevOps Summit, Todd Rader, Solutions Architect at AppDynamics, discussed key monitoring techniques...
Nov. 27, 2014 04:30 PM EST Reads: 1,841
Cultural, regulatory, environmental, political and economic (CREPE) conditions over the past decade are creating cross-industry solution spaces that require processes and technologies from both the Internet of Things (IoT), and Data Management and Analytics (DMA). These solution spaces are evolving into Sensor Analytics Ecosystems (SAE) that represent significant new opportunities for organizations of all types. Public Utilities throughout the world, providing electricity, natural gas and water,...
Nov. 27, 2014 04:00 PM EST Reads: 1,940
The security devil is always in the details of the attack: the ones you've endured, the ones you prepare yourself to fend off, and the ones that, you fear, will catch you completely unaware and defenseless. The Internet of Things (IoT) is nothing if not an endless proliferation of details. It's the vision of a world in which continuous Internet connectivity and addressability is embedded into a growing range of human artifacts, into the natural world, and even into our smartphones, appliances, a...
Nov. 27, 2014 04:00 PM EST Reads: 2,042
How do APIs and IoT relate? The answer is not as simple as merely adding an API on top of a dumb device, but rather about understanding the architectural patterns for implementing an IoT fabric. There are typically two or three trends: Exposing the device to a management framework Exposing that management framework to a business centric logic Exposing that business layer and data to end users. This last trend is the IoT stack, which involves a new shift in the separation of what stuff happe...
Nov. 27, 2014 03:00 PM EST Reads: 2,047
The Internet of Things is tied together with a thin strand that is known as time. Coincidentally, at the core of nearly all data analytics is a timestamp. When working with time series data there are a few core principles that everyone should consider, especially across datasets where time is the common boundary. In his session at Internet of @ThingsExpo, Jim Scott, Director of Enterprise Strategy & Architecture at MapR Technologies, discussed single-value, geo-spatial, and log time series dat...
Nov. 27, 2014 03:00 PM EST Reads: 2,207
An entirely new security model is needed for the Internet of Things, or is it? Can we save some old and tested controls for this new and different environment? In his session at @ThingsExpo, New York's at the Javits Center, Davi Ottenheimer, EMC Senior Director of Trust, reviewed hands-on lessons with IoT devices and reveal a new risk balance you might not expect. Davi Ottenheimer, EMC Senior Director of Trust, has more than nineteen years' experience managing global security operations and asse...
Nov. 27, 2014 01:00 PM EST Reads: 2,104
The Internet of Things will greatly expand the opportunities for data collection and new business models driven off of that data. In her session at @ThingsExpo, Esmeralda Swartz, CMO of MetraTech, discussed how for this to be effective you not only need to have infrastructure and operational models capable of utilizing this new phenomenon, but increasingly service providers will need to convince a skeptical public to participate. Get ready to show them the money!
Nov. 27, 2014 11:00 AM EST Reads: 1,910
SYS-CON Media announced that Centrify, a provider of unified identity management across cloud, mobile and data center environments that delivers single sign-on (SSO) for users and a simplified identity infrastructure for IT, has launched an ad campaign on Cloud Computing Journal. The ads focus on security: how an organization can successfully control privilege for all of the organization’s identities to mitigate identity-related risk without slowing down the business, and how Centrify provides ...
Nov. 27, 2014 10:00 AM EST Reads: 1,771
The Internet of Things will put IT to its ultimate test by creating infinite new opportunities to digitize products and services, generate and analyze new data to improve customer satisfaction, and discover new ways to gain a competitive advantage across nearly every industry. In order to help corporate business units to capitalize on the rapidly evolving IoT opportunities, IT must stand up to a new set of challenges. In his session at @ThingsExpo, Jeff Kaplan, Managing Director of THINKstrateg...
Nov. 27, 2014 10:00 AM EST Reads: 1,927
"SAP had made a big transition into the cloud as we believe it has significant value for our customers, drives innovation and is easy to consume. When you look at the SAP portfolio, SAP HANA is the underlying platform and it powers all of our platforms and all of our analytics," explained Thorsten Leiduck, VP ISVs & Digital Commerce at SAP, in this SYS-CON.tv interview at 15th Cloud Expo, held Nov 4-6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
Nov. 27, 2014 08:15 AM EST Reads: 1,633
One of the biggest challenges when developing connected devices is identifying user value and delivering it through successful user experiences. In his session at Internet of @ThingsExpo, Mike Kuniavsky, Principal Scientist, Innovation Services at PARC, described an IoT-specific approach to user experience design that combines approaches from interaction design, industrial design and service design to create experiences that go beyond simple connected gadgets to create lasting, multi-device exp...
Nov. 27, 2014 08:00 AM EST Reads: 1,885
Enthusiasm for the Internet of Things has reached an all-time high. In 2013 alone, venture capitalists spent more than $1 billion dollars investing in the IoT space. With "smart" appliances and devices, IoT covers wearable smart devices, cloud services to hardware companies. Nest, a Google company, detects temperatures inside homes and automatically adjusts it by tracking its user's habit. These technologies are quickly developing and with it come challenges such as bridging infrastructure gaps,...
Nov. 27, 2014 07:45 AM EST Reads: 2,029