Vembu VMBackup Deployment Scenarios

Vembu was founded in 2002 and has over 60,000 customers worldwide. One of their core products is the Vembu BDR Suite, which is an one stop solution to all your Backup and DR needs. I wrote a longer blog post about the Vembu BDR Suite. One part of this suite is Vembu VMBackup, which is a data protection solution that is designed to backup VMware and Microsoft Hyper-V virtual machines secure and simple way.

Using Let's Encrypt DNS-01 challenge validation with local BIND instance

I’m using Let’s Encrypt certificates for a while now. In the past, I used the standalone plugin (TLS-SNI-01) to get or renew my certificates. But now I switched to the DNS plugin. I run my own name servers with BIND, so it was a very low hanging fruit to get this plugin to work. To get or renew a certificate, you need to provide some kind of proof that you are requesting the certificate for a domain that is under your control.

Vembu BDR Essentials - affordable backup for SMB customers

It is common that vendors offer their products in special editions for SMB customers. VMware offers VMware vSphere Essentials and Essentials Plus, Veeam offers Veeam Backup Essentials, and now Vembu has published Vembu BDR Essentials. Vembu Technologies/ Vembu BDR Essentials/ Copyright by Vembu Technologies Backup is important. There is no reason to have no backup. According to an infographic published by Clutch Research at the World Backup Day 2017, 60% of all SMBs that lost all their data will shutdown within 6 months after the data loss.

Backup from a secondary HPE 3PAR StoreServ array with Veeam Backup & Replication

When taking a backup with Veeam Backup & Replication, a VM snapshot is created to get a consistent state of the VM. The snapshot is taken prior the backup, and it is removed after the successful backup of the VM. The snapshot grows during its lifetime, and you should keep in mind, that you need some free space in the datastore for snapshots. This can be a problem, especially in case of multiple VM backups at a time, and if the VMs share the same datastore.

The one stop solution for backup and DR: Vembu BDR Suite

I have worked with a lot of backup software products during my career, but for the last years I have primarily worked with MicroFocus Data Protector (former HP OmniBack, HP Data Protector, or HPE Data Protector), and Veeam Backup & Replication. Data Protector was a great solution for traditional server environments, or when UNIX (HP-UX, AIX, Solaris etc.) compatibility was required. Features like Zero Downtime Backups, LAN-free or Direct SAN backups were available for many years.

CloudFlare API v4 and Fail2ban: Fixing the unban action

In January 2017, I wrote an article about how to protect your Wordpress blog using the WP Fail2Ban plugin, fail2ban on your Linux/ FreeBSD host, and CloudFlare. Back then, the fail2ban was using the CloudFlare API V1, which was already deprecated since November 2016. Although the actions were updated later to use CloudFlare API V4, I still had problems with the unbaning of IP addresses. IP addresses were banned, but the unban action failed.

Veeam backups fails because of time differences

Last week I had an interesting incident at a customer. The customer reported that one of multiple Veeam backup jobs jobs constantly failed. The backup job included two VMs, and the backup of one of these VMs failed with this error: Error: Failed to open VDDK disk [[VMDS-SAS-01] VMDC1/VMDC1_1.vmdk] ( is read-only mode - [true] ) Failed to open virtual disk Logon attempt with parameters [VC/ESX: [vcenter.domain.tld];Port: 443;Login: [ADAdministrator];VMX Spec: [moref=vm-59];Snapshot mor: [snapshot-20226];Transports: [san];Read Only: [true]] failed because of the following errors: Failed to open virtual disk Logon attempt with parameters VC/ESX: [vcenter.

How to install Visual Studio Code on Linux Mint 18

I have wrote about the installation of PowerShell Core in Linux Mint 18 yesterday. Today, I want to show you, how to install Visual Studio Code on Linux Mint 18. The installation is really easy: Download the deb package Install the deb package Run Visual Studio Code You can download the latest packages for Windows, Linux (deb and rpm, if you want even a tar ball), and Mac on the Visual Studio Code download page.

How to install PowerShell Core on Linux Mint 18

Beside my Lenovo X250, which is my primary working machine, I’m using a HP ProBook 6450b. This was my primary working machine from 2010 until 2013. With a 128 GB SSD, 8 GB RAM and the Intel i5 M 450 CPU, it is still a pretty usable machine. I used it mainly during projects, when I needed a second laptop (or the PC Express card with the serial port…). It was running Windows 10, until I decided to try Linux MInt.

Simplemonitor - Python-based monitoring

While searching for a simple monitoring für my root servers, I’m stumbled over a python-based software called Simplemonitor. Other alternatives, like Nagios, or forks like Incinga etc., were a bit too much for my needs. What is SimpleMonitor? SimpleMonitor is a Python script which monitors hosts and network connectivity. It is designed to be quick and easy to set up and lacks complex features that can make things like Nagios, OpenNMS and Zenoss overkill for a small business or home network.