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Posts Tagged ‘Cluster

Failover Clustering & Hyper-V: Planning your Highly-Available

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From Microsoft tech.ed online here’s an excellent video to help you with the Failover Clustering in Hyper-V.

This technical session will discuss Hyper-V and Failover Clustering live migration, deployment considerations, licensing, upgrades, host clustering, guest clustering, disaster recovery, multi-site clustering, System Center Virtual Machine Manager, hardware and validation. What are the pros and cons of each virtualization solution? What’s right for my customers and their scenarios? What about combining physical and virtual machines in the same cluster? This session will include a live demo of a Hyper-V Cluster deployment and live migration.

🙂

 
 
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Written by IT Core

November 23, 2010 at 9:34 PM

Posted in How to..., Videos, Virtualization

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Hyper-V R2 Cluster CSV stops working when NTLM is disabled in cluster with Hyper-V Enabled

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Hyper-V R2 Cluster CSV stops working when NTLM is disabled in cluster with Hyper-V Enabled

ID: 5121
Source: Microsoft-Windows-FailoverClustering
Version: 6.1
Symbolic Name: DCM_VOLUME_NO_DIRECT_IO_DUE_TO_FAILURE
Message: Cluster Shared Volume ‘%1′ (’%2′) is no longer directly accessible from this cluster node

This error may be caused because the NTLM was disabled in your Hyper-Host. Enabling a policy to disable NTLM may break CSV and cause the alert described before.

If the NTLM was disabled using GPO in your Active Directory Domain, identify the GPO with this setting and create an exception to this policy for all clustered Hyper-V computer objects. Alternatively you can create and link another GPO (GPO with “enable NTLM” setting) that applies just to the clustered hosts. 

 🙂

Written by IT Core

September 21, 2010 at 10:07 PM

KB957311: Recommended hotfixes for Windows Server 2008-based server clusters

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If you determine that cluster nodes in your environment may be affected by the problems that an update or hotfix addresses, install the hotfix or update on each one of the cluster nodes in your environment.
 
 
 
952247  (http://support.microsoft.com/kb/952247/ ) The Cluster network name resource and the File Share Witness resource may not come
951308  (http://support.microsoft.com/kb/951308/ ) Increased functionality and virtual machine control in the Windows Server 2008 Failover Cluster Management console for the Hyper-V role
950179  (http://support.microsoft.com/kb/950179/ ) When you run the Validate a Configuration Wizard on a Windows Server 2008-based computer or on a Windows Vista-based computer, the validation does not pass
969550  (http://support.microsoft.com/kb/969550/ ) A Stop error occurs on an HP ProLiant server that has the firmware from an E200/E200i HP Smart Array SAS/SATA controller installed on any Windows Server platform
970529  (http://support.microsoft.com/kb/970529/ ) The volume GUID may unexpectedly change after a volume is extended on a Windows Server 2008 failover cluster node
953652  (http://support.microsoft.com/kb/953652/ ) A physical disk resource may unexpectedly fail or go offline when the IsAlive function is executed on a Windows Server 2008 cluster node

Written by IT Core

September 11, 2010 at 11:12 PM

Posted in MS Hotfixes

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KB:980054 Recommended hotfixes and updates for Windows Server 2008 R2-based server clusters

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From KB:980054
This article describes the hotfixes and updates that we recommend that you install on each node of a Windows Server 2008 R2-based failover cluster. When you update your Windows Server 2008 R2-based failover cluster, you help reduce downtime. You also help decrease the number of errors, failed print jobs, and other support issues that you experience.

We recommend that you install the following hotfixes if you plan to install the failover clustering feature on Windows Server 2008 R2 Core:
KB978309: IPv6 transition technologies, such as ISATAP, 6to4 and Teredo do not work on a computer that is running Windows Server 2008 R2 Server Core
KB976571: Stability update for Windows Server 2008 R2 Failover Print Clusters

For additional information about Network related issues and Hyper-V check my previous post at:
Hyper-V Fixes for Network Connectivity related issues

🙂

Written by IT Core

September 11, 2010 at 10:59 AM

KB2397711: Recommended hotfixes for System Center Virtual Machine Manager 2008 R2

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KB2397711: Recommended hotfixes for System Center Virtual Machine Manager 2008 R2.

Recommended updates for the Virtual Machine Manager (VMM) Server and Admin Console
982522 (http://support.microsoft.com/kb/982522)   Description of the System Center Virtual Machine Manager 2008 R2 hotfix rollup package: June 8, 2010
982523 (http://support.microsoft.com/kb/982523)   Description of the System Center Virtual Machine Manager 2008 R2 Admin Console hotfix rollup package: June 8, 2010

Windows Server 2008 – Recommended updates for Microsoft Hyper-V Server and for the VMM server
The following list applies only to systems that are running Windows Server 2008 Service Pack 1
954563 (http://support.microsoft.com/kb/954563)   Memory corruption may occur with the Windows Management Instrumentation (WMI) service on a computer that is running Windows Server 2008 or Windows Vista Service Pack 1
955805 (http://support.microsoft.com/kb/955805)   Certain applications become very slow on a Windows Server 2008-based or Windows Vista SP1-based computer when a certificate with the SIA extension is installed
956774 (http://support.microsoft.com/kb/956774)   A Background Intelligent Transfer Service (BITS) client cannot handle files that have paths that contain the volume GUID in Windows Server 2008 or in Windows Vista
958124 (http://support.microsoft.com/kb/958124)   A wmiprvse.exe process may leak memory when a WMI notification query is used heavily on a Windows Server 2008-based or Windows Vista-based computer

The following list applies to systems that are running Windows Server 2008 Service Pack 1 or Windows Server 2008 Service Pack 2
968936 (http://support.microsoft.com/kb/968936)   A rollup hotfix package for Windows Server 2008 Failover Clustering WMI provider
970520 (http://support.microsoft.com/kb/970520)   The Wmiprvse.exe process creates a memory leak on a computer that is running Windows Server 2008 if you remotely monitor this process by using the WMI interface on a computer that is running Windows Server 2003 or Windows XP
971244 (http://support.microsoft.com/kb/971244)   Windows Remote Management (WinRM) does not accept HTTP authorization requests that are larger than 16 KB on a computer that is running Windows Server 2008 or Windows Vista
971403 (http://support.microsoft.com/kb/971403)   The “Win32_share” WMI class cannot enumerate file shares or create file shares on a node in a Windows Server 2008 failover cluster

To see a list of recommended Hyper-V updates for Windows Server 2008 and for Microsoft Hyper-V Server 2008, visit the following Microsoft TechNet websitehttp://technet.microsoft.com/en-us/library/dd430893(WS.10).aspx (http://technet.microsoft.com/en-us/library/dd430893(WS.10).aspx)

Windows Server 2008 – Recommended updates for Hyper-V Failover Cluster nodes
957311 (http://support.microsoft.com/kb/957311)   Recommended hotfixes for Windows Server 2008-based server clusters

Windows Server 2008 R2 – Recommended updates for Microsoft Hyper-V Server and for the VMM server
981314 (http://support.microsoft.com/kb/981314)   The “Win32_Service” WMI class leaks memory in Windows Server 2008 R2 and in Windows 7
981845 (http://support.microsoft.com/kb/981845)   The Windows Remote Management service stops responding in Windows 7 or in Windows Server 2008 R2

To see a list of recommended Hyper-V updates for Windows Server 2008 R2 and for Microsoft Hyper-V Server 2008 R2, visit the following Microsoft TechNet websitehttp://technet.microsoft.com/en-us/library/ff394763(WS.10).aspx (http://technet.microsoft.com/en-us/library/ff394763(WS.10).aspx)

Windows Server 2008 R2 – Recommended updates for Hyper-V Failover Cluster nodes
974930 (http://support.microsoft.com/kb/974930)   An application or service that queries information about a failover cluster by using the WMI provider may experience low performance or a time-out exception
980054 (http://support.microsoft.com/kb/980054)   Recommended hotfixes and updates for Windows Server 2008 R2-based server clusters

Recommended updates for Windows Server 2003 systems that have Virtual Server installed
936059 (http://support.microsoft.com/kb/936059)   An update is available for the Windows Remote Management feature in Windows Server 2003 and in Windows XP

Recommended updates that should be applied to Windows 2000 systems before a P2V is performed
834010 (http://support.microsoft.com/kb/834010)   A deadlock occurs when a program that uses WMI calls the LoadLibrary() or the FreeLibrary() function in Windows 2000
843527 (http://support.microsoft.com/kb/843527)   The Win32_SCSIController WMI class cannot obtain SCSI controller information after you install the MS04-011 security update
892294 (http://support.microsoft.com/kb/892294)   A WMI event notification query does not detect a user permissions change on Windows 2000 or Windows Server 2003

Written by IT Core

September 8, 2010 at 11:08 PM

TechEd 2010 Virtualization Sessions

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Here’s some interesting sessions for virtualization from TechEd.

Networking and Windows Server 2008 R2 Hyper-V: Deployment Considerations

 

Microsoft System Center Virtual Machine Manager 2008 R2: Advanced Virtualization Management

The Microsoft System Center Operations Manager Top 20 Must-Have Customizations

Microsoft System Center Operations Manager and Virtual Machine Manager: Monitoring the Service Stack

See the Largest Mission Critical Deployment of Microsoft SQL Server around the World

Check the Latest Videos from TechEd North America

Have Fun 😀

HP Multi-Site Live Migration Clustering Whitepaper

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HP had released a white paper on how to do Hyper-V Live Migration/clustering across multiple sites using the HP StorageWorks Cluster Extension.

“This paper briefly touches upon the Hyper-V and Cluster Extension (CLX) key features, functionality, best practices, and various use cases. It also objectively describes the various scenarios in which Hyper-V and CLX complement each other to achieve the highest level of disaster tolerance.

This paper concludes with the step-by-step details for creating a CLX solution in Hyper-V environment from scratch. There are many references also provided for referring to relevant technical details”.

Written by IT Core

February 20, 2010 at 1:04 AM