Click here to close now.

Welcome!

Linux Authors: Pat Romanski, Elizabeth White, Jason Bloomberg, Jacob Olcott, Srinivasan Sundara Rajan

Blog Feed Post

Windows Server 2012 (Windows Server “8″) – Virtual Fibre Channel

This is one of a series of posts discussing the new features in Windows Server 2012, now shipping and previously in public beta as Windows Server 8.  You can find references to other related posts at the end of this article.  This post reviews the new Hyper-V 3.0 feature, Virtual Fibre Channel.

Background

Virtual Fibre Channel (VFC) enables a Hyper-V guest to access the physical storage HBAs (host bus adaptors) installed in the Hyper-V server.  Normally, storage adaptors would be reserved for the use of the Hyper-V guest itself however this new feature acts as a passthrough, enabling any Hyper-V 3.0 guest (at the right O/S level) to access the HBAs and so connect directly to fibre channel storage devices.

VFC is implemented through the use of NPIV, or N_Port ID virtualisation.  This a fibre channel standard that permits a single HBA to act as multiple nodes within a SAN environment.  Normally, a single HBA connects to the SAN and presents a physical ID known as a World Wide Port Name or WWPN.  This deals with the physical connectivity of the fabric.  At the same time, the connecting server or storage device presents a node name ID or WWNN (World Wide Node Name).  A WWNN can be unique per adaptor as is the case with most host-based HBAs or can be a single node representing an entire device such as a storage array.  NPIV allows a single physical adaptor to present multiple node names to the fabric and so effectively “virtualise” the physical device.  Each new node also has to have virtual WWPNs in order to adhere with fibre channel standards.

The benefits of being able to use NPIV to virtualise an HBA is that each guest in a Hyper-V environment can be assigned its own WWNN and so have a direct connection to the SAN.  It may not be immediately obvious how this helps when virtual server infrastructure is supposed to abstract the physical layer but there are a number of distinct advantages in zoning storage devices in this way:

  • Zoning can be done to the individual guest and is therefore more secure (albeit that it still goes through the hypervisor)
  • Tape drives can be supported, so backup software can write directly to devices
  • Storage that requires failover, snapshots and other SCSI based functionality can be directly supported, especially where non-standard SCSI commands are used

Implementation

VFC is configured in Hyper-V Manager using the new Virtual SAN Manager option (see the screenshots).  Only HBAs and firmware that support NPIV can be used for VFC.  This means newer HBAs only, for example Emulex HBAs at speeds of 4Gb/s and above.  Obviously the SAN fabric needs to support NPIV too.  An HBA can only be attributed to one virtual SAN, however a virtual SAN can contain multiple HBAs.  Once the virtual SAN is created, a virtual HBA can be assigned to a guest using the Add Hardware section under Settings.  Fibre channel IDs can be set as any 16-digit hexadecimal number, although it’s not advisable to use values that are already reserved out for vendors.  Microsoft defaults to some standard values, which can be auto-generated to new values through the “Create Addresses” button.  As yet I’ve not worked out why there are two sets of addresses as only the first appears to be visible on the fabric.

As soon as a guest is started, the fabric login process begins, even if no guest O/S has been installed.  As you can see from screenshot 4, the additional node indicates the source Hyper-V server (in this case PH03) but doesn’t pass through the guest name, indicating it only as “Hyper-V VM Port”.  It would be a nice update to be able to see the VM name there.

Using VFC within the Hyper-V guest requires two things; a supported O/S – one of Windows Server 2008, Windows 2008 R2 or Windows 2012 – plus the installation of the latest Integration Services update that comes with Windows Server 2012.  This means that the virtual fibre channel adaptor is not emulated as a native device and so can’t be used with other operating systems like Linux (more on this later).  The fifth screenshot shows the emulated HBA controller and tape drive I presented to the host.  One question that seems to have been discussed on a number of blogs is the support for tape drives.  I can confirm tape drives do work, but can’t see any documentation from Microsoft to say whether they are officially supported.

Performance

I chose a tape drive as this is a good way of demonstrating performance.  Deploying Backup Exec 2012 onto my Windows 2008 R2 guest, writing to an LTO2 drive, I achieved around 12MB/s, better than I’ve managed with an emulated drive through vSphere 5.0.  This is well under the spec of the drive itself (max 40MB/s) but is certainly usable in small environments.  More testing is needed here I think, as there appeared to be little overhead on the Hyper-V server to manage the data passthrough.

The Architects View

Virtual Fibre Channel is a great feature for providing native SAN device support.  However there are few restrictions on use, most notably on the need to have latest hardware and be using Microsoft platforms.  I haven’t yet seen any best practices for using VFC; for example should HBAs be placed in a single virtual SAN or should multiple ones be configured for failover; these are questions that need to be answered.  VFC could be massively improved on two fronts; firstly drivers could be provided for other platforms, especially Linux installations.  Second, if vendors were able to write code using the virtual device, then virtual SAN appliances (VSA) could use fibre channel rather than be reliant on iSCSI as they are today.

One final comment; Microsoft are doing a poor job of providing detail on these new storage features.  There is precious little to find, other than high-level blog information and as mentioned previously, no best practice documentation that I can locate.  I’d be happy to be pointed in the direction of anything useful and I will link it from this post.

Related Links

Comments are always welcome; please indicate if you work for a vendor as it’s only fair.  If you have any related links of interest, please feel free to add them as a comment for consideration. Screenshot 5 Screenshot 4 Screenshot 3 Screenshot 2 Screenshot 1

Read the original blog entry...

@ThingsExpo Stories
SYS-CON Events announced today that BroadSoft, the leading global provider of Unified Communications and Collaboration (UCC) services to operators worldwide, has been named “Gold Sponsor” of SYS-CON's WebRTC Summit, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. BroadSoft is the leading provider of software and services that enable mobile, fixed-line and cable service providers to offer Unified Communications over their Internet Protocol networks. The Company’s core communications platform enables the delivery of a range of enterprise and consumer calling...
VoxImplant has announced full WebRTC support in the newest versions of its Android SDK and iOS SDK. The updated SDKs, which enable audio and video calls on mobile devices, are now compatible with the WebRTC standard to allow any mobile app to communicate with WebRTC-enabled browsers, including Google Chrome, Mozilla Firefox, Opera, and, when available, Microsoft Spartan. The WebRTC-updated SDKs represent VoxImplant's continued leadership in simplifying the development of real-time communications (RTC) services for app developers. VoxImplant (built by Zingaya, the real-time communication servi...
SYS-CON Events announced today that GENBAND, a leading developer of real time communications software solutions, has been named “Silver Sponsor” of SYS-CON's WebRTC Summit, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. The GENBAND team will be on hand to demonstrate their newest product, Kandy. Kandy is a communications Platform-as-a-Service (PaaS) that enables companies to seamlessly integrate more human communications into their Web and mobile applications - creating more engaging experiences for their customers and boosting collaboration and productiv...
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 acquired by Aditi Technologies. He is a Microsoft Regional Director for Hyderabad, India, and one of the f...
SYS-CON Events announced today that Optimal Design, an Internet of Things solution provider, will exhibit at SYS-CON's Internet of @ThingsExpo, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Optimal Design is an award winning product development firm offering industrial design and engineering services to the consumer, medical, and defense markets.
SYS-CON Events announced today that Vicom Computer Services, Inc., a provider of technology and service solutions, 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. They are located at booth #427. Vicom Computer Services, Inc. is a progressive leader in the technology industry for over 30 years. Headquartered in the NY Metropolitan area. Vicom provides products and services based on today’s requirements around Unified Networks, Cloud Computing strategies, Virtualization around Software defined Data Ce...
SYS-CON Events announced today that Ciqada 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. Ciqada™ makes it easy to connect your products to the Internet. By integrating key components - hardware, servers, dashboards, and mobile apps - into an easy-to-use, configurable system, your products can quickly and securely join the internet of things. With remote monitoring, control, and alert messaging capability, you will meet your customers' needs of tomorrow - today! Ciqada. Let your products take flight. For more inform...
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 business opportunity. Submit your speaking proposal today!
What exactly is a cognitive application? In her session at 16th Cloud Expo, Ashley Hathaway, Product Manager at IBM Watson, will look at the services being offered by the IBM Watson Developer Cloud and what that means for developers and Big Data. She'll explore how IBM Watson and its partnerships will continue to grow and help define what it means to be a cognitive service, as well as take a look at the offerings on Bluemix. She will also check out how Watson and the Alchemy API team up to offer disruptive APIs to developers.
With IoT exploding, massive data will transform businesses with opportunities to monetize almost anything that can be measured. In this C-Level Roundtable Discussion at @ThingsExpo, Brendan O’Brien, Aria Systems Co-founder and Chief Evangelist, will lead an expert panel of consultants, thought leaders and practitioners who will look at these new monetization trends, discuss the implications, and detail lessons learned from their collective experience. Finally, the panel will point the way forward for enterprises who wish to leverage the resulting complex recurring revenue models, adding valu...
How is unified communications transforming the way businesses operate? In his session at WebRTC Summit, Arvind Rangarajan, Director of Product Marketing at BroadSoft, will discuss how to extend unified communications experience outside the enterprise through WebRTC. He will also review use cases across different industry verticals. Arvind Rangarajan is Director, Product Marketing at BroadSoft. He has over 19 years of experience in the telecommunications industry in various roles such as Software Development, Product Management and Product Marketing, applied across Wireless, Unified Communic...
Buzzword alert: Microservices and IoT at a DevOps conference? What could possibly go wrong? Join this panel of experts as they peel away the buzz and discuss the important architectural principles behind implementing IoT solutions for the enterprise. As remote IoT devices and sensors become increasingly intelligent, they become part of our distributed cloud environment, and we must architect and code accordingly. At the very least, you’ll have no problem filling in your buzzword bingo cards.
Internet of Things (IoT) will be a hybrid ecosystem of diverse devices and sensors collaborating with operational and enterprise systems to create the next big application. In their session at @ThingsExpo, Bramh Gupta, founder and CEO of robomq.io, and Fred Yatzeck, principal architect leading product development at robomq.io, will discuss how choosing the right middleware and integration strategy from the get-go will enable IoT solution developers to adapt and grow with the industry, while at the same time reduce Time to Market (TTM) by using plug and play capabilities offered by a robust I...
@ThingsExpo has been named the Top 5 Most Influential Internet of Things Brand by Onalytica in the ‘The Internet of Things Landscape 2015: Top 100 Individuals and Brands.' Onalytica analyzed Twitter conversations around the #IoT debate to uncover the most influential brands and individuals driving the conversation. Onalytica captured data from 56,224 users. The PageRank based methodology they use to extract influencers on a particular topic (tweets mentioning #InternetofThings or #IoT in this case) takes into account the number and quality of contextual references that a user receives.
SYS-CON Events announced today that Dyn, the worldwide leader in Internet Performance, 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. Dyn is a cloud-based Internet Performance company. Dyn helps companies monitor, control, and optimize online infrastructure for an exceptional end-user experience. Through a world-class network and unrivaled, objective intelligence into Internet conditions, Dyn ensures traffic gets delivered faster, safer, and more reliably than ever.
IoT is still a vague buzzword for many people. In his session at @ThingsExpo, Mike Kavis, Vice President & Principal Cloud Architect at Cloud Technology Partners, discussed the business value of IoT that goes far beyond the general public's perception that IoT is all about wearables and home consumer services. He also discussed how IoT is perceived by investors and how venture capitalist access this space. Other topics discussed were barriers to success, what is new, what is old, and what the future may hold. Mike Kavis is Vice President & Principal Cloud Architect at Cloud Technology Pa...
The only place to be June 9-11 is Cloud Expo & @ThingsExpo 2015 East at the Javits Center in New York City. Join us there as delegates from all over the world come to listen to and engage with speakers & sponsors from the leading Cloud Computing, IoT & Big Data companies. Cloud Expo & @ThingsExpo are the leading events covering the booming market of Cloud Computing, IoT & Big Data for the enterprise. Speakers from all over the world will be hand-picked for their ability to explore the economic strategies that utility/cloud computing provides. Whether public, private, or in a hybrid form, clo...
The WebRTC Summit 2015 New York, to be held June 9-11, 2015, at the Javits Center in New York, NY, announces that its Call for Papers is open. Topics include all aspects of improving IT delivery by eliminating waste through automated business models leveraging cloud technologies. WebRTC Summit is co-located with 16th International Cloud Expo, @ThingsExpo, Big Data Expo, and DevOps Summit.
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 datacenter.
While not quite mainstream yet, WebRTC is starting to gain ground with Carriers, Enterprises and Independent Software Vendors (ISV’s) alike. WebRTC makes it easy for developers to add audio and video communications into their applications by using Web browsers as their platform. But like any market, every customer engagement has unique requirements, as well as constraints. And of course, one size does not fit all. In her session at WebRTC Summit, Dr. Natasha Tamaskar, Vice President, Head of Cloud and Mobile Strategy at GENBAND, will explore what is needed to take a real time communications ...