vMotion over Distance and Stretched VLAN across L3 WAN – Cisco OTV is your Answer @stretchcloud

Not a new article, but this topic came up in debate for a current project working on but illustrated the point nicely of when you dont have L2 across sites and must use routed networks.

Below courtesy @stretchcloud. Read the article here: http://stretch-cloud.info/2012/07/vmotion-over-distance-and-stretched-vlan-cisco-otv-is-your-answer/

…I will talk about how do you stretch the VLAN onto a different DC.

Yes, I am talking about Cisco OTV. Cisco’s OTV provides a mechanism to transport native Layer-2 Ethernet frames to a remote site. With a standard Layer-3 WAN, there is no way to bridge layer-2 VLANs, and as a result, communication between two sites must be routed. Because of the routing aspect, it is not possible to define the same VLAN in two locations and have them both be actively transmitting data simultaneously.

Because OTV can operate over any WAN that can forward IP traffic, it can be used with a multitude of different underlying technologies. It provides mechanisms to control broadcasts at the edge of each site, just as with a standard Layer-3 WAN, but also gives you the ability to allow certain broadcasts to cross the islands. OTV only needs to be deployed at certain edge devices, and is only configured at those points, making it simple to implement and manage. It also supports many features to optimize bandwidth utilization, provide resiliency and scalability.

Let’s look at how OTV operates. Here we have two sites separate by a standard Layer-3 WAN connection. OTV is deployed across the WAN by configuring it on an edge switch at both sites. Each end of the OTV “tunnel” is assigned an IP address. Both OTV switches maintain a MAC-to-Next Hop IP table so that they know where to forward frames in a multi-site configuration.

When a host at one site sends a frame to a host at the other site, it can determine the MAC address of the other host, since it is on the same VLAN/network. The host sends the Ethernet frame, which is accepted by the OTV switch and then encapsulated in an IP packet, sent across the WAN, and subsequently decapsulatedby the remote OTV switch. From here, the Ethernet frame is delivered to the destination as if it had been sent locally.

Concept in Practice: Workload Relocation Across Sites

In the event that there is a planned event that will impact a significant number of resources, services must be moved to an alternate location. Unfortunately, because the networks are disjointed, there is no way to seamlessly migrate virtual servers from one location to another without changing IP addresses. As a result, Site Recovery Manager is used to provide an offline migration to the second site, and update DNS records to reflect the new IP addresses for the affected servers. Once the event is complete, another offline migration is performed to restore services to the primary site.

Concept in Practice: vMotion over Distance with OTV & Stretched VLANs

By using OTV in this situation, instead of having to use SRM to emulate a disaster situation, vMotion can be used to migrate the VMs from one site to the other. While this migration is still an offline event, it does provide a much simpler solution to implement and manage by allowing the VM to maintain it’s network identity in either location.

In addition to addressing the initial challenge, OTV provides additional benefits. By having two functional sites with the same network attributes, it is possible to split workloads for services, providing fault tolerance and redundancy. So, if the primary site does have a planned event, failing resources over to the second site may not even be necessary. It also allows the infrastructure to scale by having added ESXi servers operational at the second location to distribute the load.

HP ASE Converged Infrastructure Architect Official Exam Certification Guide #Matrix HPCloudSystem #MOE #HPExpertOne

This HP ExpertOne book will help you prepare for the Architecting the HP Matrix Operating Environment (HP0-D20) exam. You will learn key technologies and the HP Converged Infrastructure solutions as you prepare for the HP ASE – Converged Infrastructure Architect V1 certification. Acquiring this certification validates your ability to transform data centers bringing together server, storage, and networking functions into an integrated and managed pool of IT resources. This guide will continue to serve as a useful reference to analyze customer requirements and recommend the correct HP Converged Infrastructure solution.


Reference Architecture Microsoft #Lync Multitenant Pack for Partner Hosting White Paper @DrRez #Hosters #HMC-Next

“This white paper describes a reference architecture for the Microsoft Lync Server 2010 Multitenant Pack for Partner Hosting, including feature descriptions, architecture design details, and build lists to assist in determining cost estimates to build and deploy the solution. The Lync Server Multitenant Hosting Pack for is a unified communications (UC) solution for telecommunication and hosting providers. The solution allows hosting providers to host their own fully integrated, multi-tenant unified communications service targeted to small and medium sized businesses.”

Download the reference Archietcure here…http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=29045

Lync Multi-tenant Reference Architecture

Upcoming Readiness Opportunities Around SQL Server 2012 for Service Providers #Hosters #Hosting @msfthost

Courtesy of Microsoft Hosting Community Newsletter

SQL Server 2012: Training and Events

Upcoming Readiness Opportunities Around SQL Server 2012 for Service Providers:

March 5: SQL Server 2012 Launch Prep—Technical Overview for Service ProvidersThis technical overview session will cover what’s coming in Microsoft SQL Server 2012 and review the latest features that Service Providers can leverage in their business. Sales Engineers, Architects, Product Managers, and Database Administrators from Service Providers should attend this session, which will focus on key SQL Server 2012 features and new offerings that hosters can build on top of SQL Server 2012.

March 7: SQL Server 2012 Virtual Launch Event (VLE)The SQL Server 2012 Virtual Launch Event (VLE) will help immerse you in the exciting new world of data with SQL Server 2012. Engage with Microsoft product teams as well as with partners and customers. Discover how SQL Server 2012 enables mission-critical confidence, fast performance, and interactive data visualizations.

March 22:

Service Provider Sales Teams—Positioning SQL Server 2012 with Your Customers Microsoft will conduct training for Service Provider sales teams on how to position SQL Server 2012 with customers. Account Managers, Telesales Teams, and Sales Engineers from Service Providers should attend this session, which will focus on key SQL Server 2012 features—what SKUs will be part of SQL Server 2012 and how these features compare to previous versions of SQL Server.

Additional Training Resources:
On-Demand Training: SQL Server 2012—Overview for Service Providers and SPLA

Now available: Microsoft Deployment Toolkit 2012 RC1 #MDT #SystemsCenter2012


Reliable and Flexible OS Deployment—now with support for System Center Configuration Manager 2012 RC2

New features and enhancements make large-scale desktop and server deployments smoother than ever!

Support for Configuration Manager 2012 RC2: This update provides support for Configuration Manager 2012 RC2 releases. MDT 2012 fully leverages the capabilities provided by Configuration Manager 2012 for OS deployment. The latest version of MDT offers new User-Driven Installation components and extensibility for Configuration Manager 2007 and 2012. Users now also have the ability to migrate MDT 2012 task sequences from Configuration Manager 2007 to Configuration Manager 2012.

Customize deployment questions: For System Center Configuration Manager customers, MDT 2012 provides an improved, extensible wizard and designer for customizing deployment questions.

Ease Lite Touch installation: The Microsoft Diagnostics and Recovery Toolkit (DaRT) is now integrated with Lite Touch Installation, providing remote control and diagnostics. New monitoring capabilities are available to check on the status of currently running deployments. LTI now has an improved deployment wizard user experience. Enhanced partitioning support ensures that deployments work regardless of the current structure.

Secure Deployments: MDT 2012 offers integration with the Microsoft Security Compliance Manager (SCM) tool to ensure a secure Windows deployment from the start.

Reliability and flexibility: Existing MDT users will find more reliability and flexibility with the many small enhancements and bug fixes and a smooth and simple upgrade process.

Support for Windows 8: The RC1 release of MDT 2012 provides support for deploying Windows 8 Consumer Preview in a lab environment.

Key Benefits:
• Full use of the capabilities provided by System Center Configuration Manager 2012 for OS deployment.
•Improved Lite Touch user experience and functionality.
• A smooth and simple upgrade process for all existing MDT users