Posts related to virtualization on VMware vSphere
I was experiencing strange behavior with Virtual Machines running on the ESXi hypervisor caused by Cisco Nexus CSCui86494 bug. Client was reporting very slow or even unresponsive application with long waiting time. When I tried the basic ping there was a packet loss somewhere between 70 – 80%. What made… Continue reading
Few weeks ago I did attend web meeting about “Extending VMware vCenter to Hybrid Cloud” with Oded Haner. It get my curiosity as it was promising something i did not believe is possible. Even after seeing the presentation I had doubts. I decided I have to see and touch it,… Continue reading
One of my client is considering to move the application from Solaris based OS under Linux OS and virtualize them using VMware vSphere. The requirement is to have the most efficient way how to monitor the application status and react on any failure asap. Taking into account such requirements, one of… Continue reading
In this article I will cover steps and actions we took in order to ensure a seamless migration of our current SQL Database server to a new one. This will include a lot of recommendations and what issues we faced both in testing and real environment. Prerequisites Before starting with… Continue reading
New issue was discovered which may result in corrupted backups leveraging vSphere CBT (Change Block Tracking) for incremental backups. Basically all backup products which use VMware API for Backups ( Virtual Disk Development Kit (VDDK) )are affected. This issue occurs when you expand a virtual disk vmdk file which has… Continue reading
If you decided to go with disk mirroring inside your guest operating system across two SAN LUNs for whatever reason (e.g. you want to bring another level of the protection for your application and your SAN environment does not support “stretch cluster” implementation, no support for synchronous mirroring, budget constrains… Continue reading
It happened several times that I needed to have some kind of a validation checklist after the vSphere installation. I decided to put together all my notes and collect the specific steps and configurations to be tested in the validation process for VMware Infrastructure. The goal is to quantify the… Continue reading
Intro In my previous article called “Centralized syslog server for vSphere environment with CentOS 7 and rsyslog” I showed one of the ways how you can configure centralized Syslog server for vSphere environment. But in that article I covered only ESXi part. In this article I will describe how to send… Continue reading
You may be aware about recent academic research regarding potential TPS (Transparent Page Sharing) (enabled by default) vulnerability, where you may be able to determine AES encryption key from memory timings. VMware response for this (although they do not believe it can be used in real world): they will disable… Continue reading
VMware used VMworld to disclose under development features of the new vSphere 6.0 (still in beta). This overview contains functionality which may not actually make it into the public released version. Intro October 16, 9:00 am, last day at VMworld 2014 in Barcelona. Breakout session vCenter Server Architecture and Deployment Deep… Continue reading
