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Archive for April, 2011

Facebook Malicious Application

Posted by Brajesh Panda on April 22, 2011

If you see below application on your face don’t click that. It is a kind of malicious application. If you click it will automatically get broadcasted to all of your friend. Then if they click it again it will come back to your wall!

Posted in Mix & Match | Tagged: | Leave a Comment »

Microsoft iSCSI Target Software 3.3

Posted by Brajesh Panda on April 20, 2011

It is out for public use. I have used this particular free software to make my old server to a storage box………hurray…

You can download this software from Ms Site; http://www.microsoft.com/downloads/en/details.aspx?FamilyID=45105d7f-8c6c-4666-a305-c8189062a0d0

It is compatible with Windows 2008 R2 Service pack 1. Now I don’t need to break my head with other tools like iSCSI Kake, Openfiler etc…

Earlier this piece of software used to come with Storage Server as a optional feature…..

Here are some related URLs for this product:  Support Policies: http://technet.microsoft.com/en-us/library/gg983493(WS.10).aspx, Scalability: http://technet.microsoft.com/en-us/library/gg509003(WS.10).aspx, Technet: http://technet.microsoft.com/en-us/library/gg232606(WS.10).aspx; Know Issues: http://technet.microsoft.com/en-us/library/gg232597(WS.10).aspx

Posted in IP-SAN, Storage, WindowsStorageServer2008 | Tagged: , | 2 Comments »

Assign Pass-through or Physical Disk to Hyper-v Virtual Machine

Posted by Brajesh Panda on April 20, 2011

To assign a pass-through disk to your hyper-v virtual machine you must have a free drive/disk allocated to your hyper-v host. It can be a local drive or SAN LUN. Just to note if you have a hyper-v cluster & you are assigning pass-through disks to hosted virtual machines there are some extra steps you have to perform. I will touch upon those steps in another article.

In below picture I have assigned a new drive to my hyper-v server. And I will assign the same to my virtual machine as a pass-through physical disk.

  • Right click “Initialize the Disk”, you may like to select GPT Style for Large partition.

  • Right click & bring the disk to offline state

  • Shutdown the VM where you like to add the Pass-through Disk.
  • Go to Virtual Machine Settings, Select Disk Controller & Add HDD, Select “Physical Disk” radio button, Drop down & select the disk.

  • Start Virtual Machine & Open Disk Management tool, you will able to see Online New Drive. Below picture refer to Disk 1. Now you can create partition & start using them.

Posted in MsHyper-V | Tagged: | 3 Comments »

Extend Pass-through physical disks in Hyper-v Virtual machines

Posted by Brajesh Panda on April 20, 2011

I have a virtual machine allocated with a pass-through physical disk. I like to extend the size. How to do??

In below screen shot Disk 0 & Disk 1 both are pass-through disks. These two are two SAN Luns allocated to my Hyper-v hosts. Disk 0 pass-through disk is used for operating system & Disk 1 is used for data.

In normal circumstances if we extend the local drive or SAN LUN & we do a Disk SCAN in the operating system. After that disk management usually show us new free new space available for extension.

In case pass-through disks you will able to see new size from virtual machine settings. But virtual machine operating system will not able to see the extension free space in the pass-through drive. You have to reboot the virtual machine to see the extension.

In my lab I have extended the 9GB LUN to 19GB. Here is the screen shot of virtual machine settings

 

After VM reboot you will able to see the free space on Disk 1. Now you can extend the same.

Posted in MsHyper-V | Tagged: , | 3 Comments »

Configuring Live Migration & Cluster Shared Volume – Part 1

Posted by Brajesh Panda on April 15, 2011

Why?

Microsoft Failover Cluster 2008 or Microsoft Cluster Services 2000 or 2003 are designed on the basis of Nothing Shared Architecture. Hence if we want to move the virtual machines from one cluster node to other cluster node we can’t do that. Because none of the Virtual Machine LUNs are shared between two cluster nodes at the same time. In this architecture complete LUN will get transferred in case of host dies & virtual machines can be restarted. But they can’t be migrated while they are up & running like vMotion.

New Hyper-V architecture was released with Windows 2008 R2 Server which supports shared volume between nodes. It called as Clustered shared volume. This volume can be used by all nodes at the same time. All virtual machines located in this LUN can be started on any of the host. If one node dies virtual machine will get started in any other available nodes. And can be live migrated (like vMotion) to other available nodes.

In this article we will be discussing how we can enable cluster shared volume & implement live migration to make our hyper-v cluster full proof. As we discussed above to implement Live Migration we need to have Clustered Shared Volumes i.e. CSV first we will configure CSV & then live migration.

Enable Cluster Shared Volume

Requirement:

  1. Shared Disk Volume between cluster nodes. Make sure each node can mount this volume using cluster validation tool.
  2. Dedicated Network for CSV communication traffic in case we have large number of virtual machines are running out of the cluster. Make sure you enable “Microsoft File & Print Sharing” & “Client for Microsoft Network” features on the CSV network card

Add a Shared Storage Volume as CSV

  • Open Failover cluster manager. Right click the server name & click on Enable cluster shared Volumes


  • Accept the supportability notice & click okay. Just to note CSV only supported in Hyper-v application & this volume only should contain virtual machine config & vhd files.


  • Now you will able to see Cluster Storage Volume feature has been enabled in your failover cluster. However to make it work, we have to assign shared volume & a network adapter (optional)
  • Right click the CSV & select Add Storage


  • Select available storage volume & click okay


  • Verify configuration clicking on cluster shared volumes.
  • You can see this cluster storage disk has been mounted as a volume to C:\ClusterStorage\Volume1


  • Use windows explorer & verify the same folder from all nodes. You should able to browse around the volume1 folder from both servers. If not check the event logs for any error. Here is one of them http://wp.me/phPxo-8C.



 

  • Update Hyper-V configuration to use this LUN
  • Open Hyper-V Manager Console, right click the server & go to Hyper-v settings. Update default virtual Disk & configuration location to C:\ClusterStorage\Volume1\


Add a Network Card for CSV Communication Traffic

  • You can use Get-ClusterNetwork to see all used cluster network cards in this cluster
  • If this cmdlet didn’t work you can use Import-Module Failover Clusters cmdlet to import power shell cmdlets.
  • Out of box Private Network is always configured to use for primary CSV Traffic. However there are some caveats ;-), keep reading.


  • Metric & AutoMetric attribute on each network card used to define or determine their participation in CSV Communication Network Traffic


  • The Metric setting is used to determine the priority of the network. The network with the lowest value is the most preferred for CSV
  • The AutoMetric setting identifies whether the Metric setting was set manually or automatically by the failover cluster. True means it is default

Change Values: ( Get-ClusterNetwork “Cluster Network 1” ).Metric = 1100



  • The AutoMetric setting changes from True to False after you manually change the Metric setting. This is to prevent the failover cluster from automatically assigning a Metric setting. If you want the cluster to start automatically assigning the Metric setting again, change the AutoMetric setting back to True.

Posted in MsHyper-V | Tagged: | 3 Comments »

Cluster Shared Volume ‘volume1’ (‘cluster Disk 1’) is no longer available on this node because of ‘STATUS_BAD_NETWORK_PATH(c0000be)’. All I/O will temporarily be queued until a path to the volume is reestablished.

Posted by Brajesh Panda on April 14, 2011

Symptom: You can access Volume1 from one node but not from other node. This node will through below error in the event log

Cluster Shared Volume ‘volume1’ (‘cluster Disk 1’) is no longer available on this node because of ‘STATUS_BAD_NETWORK_PATH(c0000be)’. All I/O will temporarily be queued until a path to the volume is reestablished.

Solution: Verify if you have forget to enable “Microsoft File & Print Sharing” & “Client for Microsoft Network” features on the CSV network card. This is the requirement for CSV communication.

Mostly we forget to enable these two things when we use traditional cluster private network card for csv communication.

Posted in MsFailOverClustering, MsHyper-V | Tagged: , | Leave a Comment »

Dynamics CRM Internet Browser Compatibility – 2

Posted by Brajesh Panda on April 5, 2011

Last 27th December I have wrote about my frustration on Dynamics CRM Internet Browser Compatibility issue. Here is the short link http://wp.me/phPxo-7a.

I think I found a solution about the same; from quite some time I am using Google Chrome. And somebody has developed a good IE Tab Extension for Google Chrome. It is a nice one…. I am using for exchange OWA too.

Just to let you know guys MS has improved this browser compatibility issue for Exchange 2010 & SharePoint 2010. Still I have to test CRM 2011… This is a good move from MS. Appreciate it! Now I can use this IE Tab extension for

Posted in MS CRM 4.0 | Leave a Comment »

 
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