VMware vMotion – Error “Different offload or security policies”

This unable to migrate error indicates that the source and destination servers have different security or offload settings configured on the virtual switch or portgroup that the virtual machine is connected to and usually is related to Traffic Shaping options enabled not on all physical hosts. Read More …

SQL Server – Creating linked server in SQL Server Management Studio

In SQL Server environments the linked server functionality is commonly used to connect to another (remote) database or file (Xls, CVX) using SQL Server Management Studio (SSMS) and access and use the remote data and objects. Read More …

Linux – Removing Apache HTTP Server

Removing Apache HTTP Server ensures that, it’s existing files or services will not create conflict when we install Apache HTTP Server from the source code. Read More …

Excel – Remove Everything But Duplicate Rows

In Excel, we all know that, there will be a moment in which we need the opposite the people usually need on usual Excel worksheets: this is the case of searching and filtering, from a dataset, only duplicates values, removing the unique ones. Read More …

Configuring Let’s Encrypt TLS Certificates

Let’s Encrypt® has revolutionized the way to obtain, install and use TLS/SSL certificates for websites and other services. With its Read More …

VMware – The OVF package is invalid and cannot be deployed

During a VM migration on a VMware ESX infrastructure, using OVA/OVF formats, VMware importing process could be difficult due to the possibility to deploy the OVF/OVA package, and the vSphere Client fails. Read More …

Windows Server 2016 – Disk and Share quorum members (Failover Clustering)

Let’s begin by saying and focus that computer clusters (Windows-based) require 3 or more voting member systems to be stable. A failover cluster is a group of independent servers which work collaboratively to ensure high availability and scalability for workloads such as File Server, Exchange, SQL, and Virtual Machines. Read More …

Excel – Allow Certain Users to Edit Cells Range

Excel offers you an ability to assign user-level permissions to different areas on a protected spreadsheet. You can specify which users (usually local or Active Directory ones) can edit a particular range while the spreadsheet is protected. Read More …

Nginx – Configuring Reverse Proxy

A reverse proxy is an in-the-middle proxy service which takes a client request, passes it on to one or more servers, and subsequently delivers the server’s response to the client: basically the communication will be only between the proxy and the client, there will be no direct traffic between these two endpoints. Read More …

Segment a LAN into VLANs

VLANs or virtual LANs, are a great tool to segment LANs without having to build a complex and costly network infrastructure. Even with only a unique switch you can build a network with multiple broadcast domains. Read More …