One of the best ways to gain knowledge and to test drive software and configurations is to have a virtual lab. This isn’t really big news of course, but for many newcomers to Systems Administration and virtualization it can be difficult to find resources to build an effective lab. Luckily, with VMware Workstation, or VMware Fusion for OSX … Read more
Let’s suppose that we have a configuration where our VMware data-centres are geographically separated and we use more than one vCenter instance running in Linked Mode. I’m using this type of configuration in lab and production environments with great success, except there is one distinct drawback. When two VMware data-centres are running with Linked Mode vCenter … Read more
When considering a BCP (Business Continuity Planning) solution for your application server environment, one product that you should definitely consider is Double-Take Availability from Vision Solutions. I’ve been using the Double-Take product suite since its earliest days when the company was originally NSI Software. Over recent years the company became branded as Double-Take Software to … Read more
For those who have had exposure to development environments, you are probably familiar with TDD, or Test Driven Development. If not, then I highly recommend that you dig into the topic as it may be one of the best tools to have in your toolkit: http://en.wikipedia.org/wiki/Test-driven_development The concept is simple: Design a test for an upcoming … Read more