RAID Levels and Types

In simple terms, RAID is basically a way of combining a group of hard drives together to form a single “virtual” drive. The main benefit is not only to obtain a bigger combined space but also to have data protection by having redundancy. This redundancy is achieved by duplicating the data in the additional drives, therefore, if one drive fails […]

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How the NSA is infiltrating private networks

The NSA, working with its British counterpart, the Government Communications Headquarters (GCHQ), secretly taps into the internal networks of Yahoo and Google, the two biggest Internet companies by overall data traffic. The operation intercepts information flowing between the enormous data centers that those companies maintain around the world. In general, Google and Yahoo use privately owned or leased lines to […]

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VMware Virtualization Fundamentals – VMware Server and VMware ESXi

In this VMware article, let us discuss the fundamental concepts of virtualization and review the VMware virtualization implementation options. Following are few reasons why you might want to think about virtualization for your environment. Run multiple operation systems on one server. For example, instead of having development-server and QA-server, you can run both development and QA on a single server. […]

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Windows Server 2003 DC health check command

The following command will useful for 2003 DC health check: 1. dcdiag.exe /v /f:dcdiag_servname.txt 2. dcdiag.exe /test:dns /v /f:dcdiagdns_servername.txt 3. repadmin /showrepl > replication_servername.txt 4. repadmin /replsum /errorsonly > replicationerr_servername.txt dcdiag.exe Health check for DCs and/or services assoicated with it. dcdiag.exe /test:dns Let me know DNS health status repadmin /showrepl This shows all my replication and if it was successful […]

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PowerShell Intro

Introduction PowerShell is the most powerful automation tool that Microsoft has to offer, and its both a shell and a scripting language. Please note that this series is based on PowerShell 3, which ships with Windows 8 and Server 2012. If you are running Windows 7 please download the PowerShell 3 update before you continue. Meet the Console and the […]

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How to Grant Read-Only Access to an Exchange Mailbox

Granting a user read-only access to the mailbox and calendar of another user in an Exchange Server organization. This is a common scenario and the solution is reasonably simple though perhaps not obvious. Let’s look at the scenario of Alan Reid trying to access the mailbox of Alex Heyne. With no access configured Alan gets an error message when he […]

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Exchange Server 2013 Server Roles

The multi-role server architecture that was introduced with Exchange Server 2007, and then continued with Exchange 2010, has been consolidated in Exchange Server 2013. Exchange 2013 has just two server roles that can be installed: Client Access server Mailbox server Server role selection during Exchange 2013 setup The two roles can co-exist on the same host, or be installed separately. […]

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