NetApp – New Windows MPIO (V3.5) available

NetApp has released a new version of their MPIO DSM (Version 3.5) which does include several fixes and simplifies the deployment for NetApp connected Windows systems. The new features which are included in version 3.5 are: The Data ONTAP DSM 3.5 for Windows MPIO includes the following changes: – Data ONTAP operating in Cluster-Mode is…

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How to configure NIC Teaming with HP Proliant and Cisco or Procurve Switch Infrastructure?

Very often I do need to configure NIC teams with HP hardware with Cisco or Procurve networking infrastructure therefore I would like to share an general overview of the NIC HP teaming capabilities, general teaming algorithms and especially how to configure an Cisco or Procurve switches. My personal preferred teaming mode here is to use…

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How to use Powershell in Failover Clustering–Part 1

Powershell is a really powerful toy for any Windows administrator where tasks need to be automated and or repeated several times. Here I would like to start an blog series of how to use Powershell in Windows Server Failover Cluster (WSFC) environments. Let’s start over with some basic commandlet’s to get status of clustered groups,…

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Post SP1 Hotfixes for Windows 2008 R2 SP1 with Failover Clustering and Hyper-V

In addition to my previous blog around the list of recommended hotfixes for SCVMM, Hyper-V and Failover Clustering, I do personally maintain currently a list with all post (recommended/required/regular….) SP1 released hotfixes especially with focus on Failover Cluster and Hyper-V: http://ramazancan.wordpress.com/2010/11/21/recommended-hotfixes-scvmm-hyper-v/ KB2528357 – Nonpaged pool leak when you disable and enable some storage controllers in…

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Failover Cluster Network Design with Hyper-V–How many NICs are required?

Failover Clustering reliability and stability is also “strongly” dependent on the underlying networking design and *drivers* but that’s a another story…. Let’s focus here in the design part. Since there is no more the hard requirement like in Windows 2003 based clusters (MSCS) for an “HB” (heartbeat) network there is some “unsureness” around the network…

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Running Domain Controller on top of Hyper-V and Failover Cluster?

Generally this questions is currently a well discussed topic in my customer scenarios therefore I would like to cover the important points when talking about virtualized DCs and especially when Failover Clustering is involved. Hyper-V: Mainly the virtualization of DC roles are generally supported if you had understood the caveats. Generally in production environments you…


How to generate and correctly interpret Failover Cluster Log

Very often it is required to generate cluster log if the eventlog information’s are not enough to nail down your root cause and for getting a better understanding what is happening under the hood of your failover cluster. Hereby are some useful articles and techniques for how to generate cluster logs and of course how…


Step-by-Step and Capacity Planning Guides for Remote Desktop Services–SP1 updated

Microsoft has released updated documents for host and capacity planning as well step-by-step documentation for their great and really powerfully new terminal service roles like Session Host, RD Web Access, RD Gateway (my favourite), RD Virtualization host…..with updated functionalities like RemoteFX for VDI scenarios based on Windows 2008 R2 SP1. Here are consolidated links of…

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YOU HAVE LOST ACCESS TO SQL SERVER, HOW TO FIX-IT?

You are working as a trusted DBA responsible for some extremely important SQL Servers for your company. For the sake of security, you have performed the following steps to secure SQL Servers: You have removed any and all built-in administrators account from SQL Server logins You have removed all the users (except SA) that were…


Deploying Microsoft Windows Server 2008 Networking with Cisco

Cisco has published an really useful whitepaper around networking deployments with their Cisco gear and does provide great technical details around the new enhanced capabilities of the new networking features from 2008/Vista stack. Techniques like Teredo, ISATAP, NAT, SMBv2, IPv6…..will be discussed in detail especially the multisite cluster DNS is also covered here: Deploying Microsoft…