July 30, 2013

VMware Virtual Machine Disk

Virtualization,

The .VMDK file extension is used with the Virtual Machine Disk VMDK format specification used with VMware ESX, ESXi or typically with Vmware Vritual machines. VMDK is an open file format can be compared with the MS Virtual Hard Drive (VHD) disk format and they are not directly compatible. Tools such as the VMDK to…

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March 29, 2013

Feature of VM Consolidation in vSphere 4.0U2

Virtualization,

VM Consolidation is a feature in vSphere 4.0U2. What does this feature do and how does this really stick with VM snapshots? To get a better view, one should have knowledge in snapshots feature and snapshot manager. What are snapshots? It is very much similar to a well known feature called system restore that you…

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March 22, 2013

Resilient File System (ReFS) New local file system introduced in Windows Server 8

Windows General,

Resilient File System (ReFS) is a new local file system introduced in Windows Server “8”, immediately addressing critical server customer needs, and providing the foundation for future platform evolution, for all Windows customers. The main goal behind ReFS is to improve resiliency and reliability, especially in instances when a power failure happens. NTFS could sometimes…

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March 15, 2013

The FHRP (First-hop Redundancy Protocols)

Network,

The Multilayer switches can act as IP gateway for connected hosts by providing gateway addresses at VLAN SVIs and Layer 3 physical interfaces. These switches can also participate in routing protocols ad a traditional routers does. Multi Layer switch will offer a means of preventing one switch (gateway) failure from isolating an entire VLAN. The…

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March 8, 2013

SQL Server Always On Availability Group

Database,

Overview: SQL server always on Availability group is a new feature developed in SQL server 2012 on the basis of SQL mirroring and Windows server failover clustering. So the environment must achieve the same requirement of the windows server failover clustering and SQL Installation. For configuration of a fail over cluster, Environment should be configured…

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October 12, 2012

Tackling no Application pool in the CP

Linux General,

If no application pool option is available for a particular user / reseller account in H-sphere. Goto to the reseller a/c -> select the plan -> enable the application pool Only after this, the app pool option will be available to all other user. You can now change it to dedicated application pool for example.

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October 12, 2012

Asp / Asp.net errors

Windows General,

Server Application ‘/’ unavailable error This is a generic error message. If this related to asp error (you can identify this by checking the error message under the Server application ‘/’ unavailable error) Possible solutions: 1. Check the permissions for the domain folders. Assign Asp.net and network service permissions to it if it lacks. 2.…

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October 12, 2012

changing RDP port number

Windows General,

To change RDP port number (Windows server) Run -> Regedit -> Hkey_Local_machine -> system -> currentcontrolset -> control -> Terminal server -> Winstations -> RDP-TCP -> portnumber (right side) Also add an port exception in the Firewall. example port numbers: 3315, 3325, 4124 etc. Note upto port 1024 are reserved ports. Hence do not use…

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August 28, 2012

Problem starting asp.net service – Asp regiis

Windows General,

If Asp service is not displayed in services.msc but installed OR if you are having a problem starting the ASP.net service, please follow the steps: Run -> cmd -> C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322 or C:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727 Go to this location and enter the following command: aspnet_regiis.exe -i This command will repair the asp.net installation.

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August 24, 2012

SQL database Offline or Online

Linux General,

When you are working with the databases to restore or backup you may come across the error: “Cannot Backup/Restore (especially) when database is in use” So in order to over come the database status, Right Click on Database -> New Query: sp_dboption ‘dbname’,’offline’,’true’ (It will make the database to become offline) sp_dboption ‘dbname’,’offline’,’false’ (It will…

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