Compliance Scan from SCVMM fails with Error (2927)

Hi,   recently, I had some occurrences of the following error while scanning the compliance state of particular hosts or clusters from SCVMM:   Error (2927) A Hardware Management error has occurred trying to contact server <hostname>  . WinRM: URL: [http://<hostname>:5985], Verb: [INVOKE], Method: [ScanForUpdates], Resource: [http://schemas.microsoft.com/wbem/wsman/1/wmi/root/scvmm/UpdateManagement]   Unknown error (0x80338043)   Recommended Action Check…

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Verify all SCVMM Host Agents are up to date

Hi, now that UR8 is available, I modified my script slightly to also check if the DHCP Extension is correct. If it is shown in red, please manually update it on every host.   Usually, I expected that my hosts would report that they need attention and a Host Agent update would be required. As…

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Getting started with virtual Fibre Channel inside a Hyper-V VM

Hi, recently I had to build an environment with Hyper-V virtual fibre channel. As I’m not a SAN expert I had some key learnings that I’d like to share with you. A good lecture is http://social.technet.microsoft.com/wiki/contents/articles/18698.hyper-v-virtual-fibre-channel-troubleshooting-guide.aspx So I used a 2 node cluster with one Emulex LP adapter in each node. HA enviroments usually have…

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Building a teamed virtual switch for Hyper-V from SCVMM

Hi! A common question today is how to setup your cluster blades with (10GB) Ethernet connections. How do I configure that correctly with the following requirements: A LBFO (Load Balanced FailOver) Team of the available physical Connections. Several Networks which are controlled by QoS to not use up the entire channel. Management Network Cluster Network…

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Using Port ACLs in Hyper-V 2012

Hi, recently, I had an issue where it was needed to carefully control which machines can talk to each other by using a feature in Server 2012: Port Access Contol Lists (ACLs) The feature is described in http://technet.microsoft.com/en-us/library/jj679878.aspx but might require more explanation. You can use the ACLs on MacAddresses or IPAddresses and additionaly specify…

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Howto move a Linux VM from Vmware to Windows Azure VM

Hi,   I just had a interesting task I’d like to share:   Customer had some Linux CentOS 6.3 VMs running on VmWare ESX. The task was to convert this machines to Windows Azure VMs. Here are the steps we made:   1. For the destination Platform Azure customer installed the Linux Integration Services into…

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Hyper-V Powershell module not installed during Bare Metal Deployment

Hi,   I just had an issue that my 2012 Hyper-V Hosts did not have the new powershell commands available. (get-vm, etc) I installed the Hosts using SCVMM 2012 SP1 (beta) using Bare Metal Deployment http://blogs.technet.com/b/cloudytom/archive/2012/01/02/scvmm-2012-bare-metal-deployment-checklist.aspx As it turned out, this does not add the optional hyper-v powershell module. To add them afterwards, use the…

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RedHat 6.3 VM may loose Network connectivity after a live migration

Hi,   recently, I had an issue with a RHEL 6.3 VM with the latest Integration Components 3.4. After live migration of the VM to another node, it was not reachable over the network anymore. Usually, the ICs send out a  “Gratuitous ARP” to let each switch update their internal routing table  to the VM. The ICs depend on…

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Raising Assigned Memory on Demand on Hyper-V

Hi, I’m using Dynamic Memory for all my VM’s and tend to start low (512MB). However, it happend to me that some software did not install as there was not enough memory assigned. Until now, i had to shutdown the VM, adjust the startup, and started the VM again to install the software, but ….    I just discovered a…

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