12 April 2011

VMware Lab setup – A virtualized lab for testing HA and DRS

VMWare VSphere is a virtualisation technology that is best learned by setting up, on a single PC, a VSphere cluster as a virtualisation lab. Once you have it, it will then be a useful tool in many ways. This doesn't need to be an expensive exercise, but can be daunting if you don't have a simple guide to talk you through the process. Here, Sean provides that simple guide … Read more
11 April 2011

Dynamic Memory in Windows 2008 R2 SP1

Windows Server 2008 R2 SP1 has introduced what Microsoft calls 'Dynamic Memory'.The start-up RAM VM memory assigned to guest virtual machines can be allowed to vary according to demand based on the workload of applications running inside. Fine, but it requires careful setting up for certain applications. Jaap explains.… Read more
14 May 2010

Virtual Machine Storage Provisioning and Best Practises

If you're using virtualization technology, then at some point you'll have run out of (or will run out of) virtual disk space, leading to the provisioning of extra storage; are you confident that you know how to do that? Sean Duffy makes sure you're doing it right, sharing his recommendations and tips in this step-by-step guide. Follow this advice, and you'll be a virtualization veteran in no time.… Read more
22 October 2009

Increasing the Availability of Virtualised Applications and Services

By using a virtualized clustering computing environment with failover, you can improve server availability without using as many physical computers. A group of independent computers can work together to increase the availability of virtualised applications and services. If one of the cluster nodes fails, another node takes over to provide the service without disrupting the service. Nirmal Sharma explains the failover process under Hyper-V and how to improve the performance of a failover.… Read more
10 June 2009

A Beginner’s Guide to Virtualizing Exchange Server, Part 2

It isn't easy to measure the consumption of physical resources by servers in virtual machines, since each partition has its' own virtualised view of system resources. Not only that, but there is a subtle difference between virtual processors and physical processors. Brien Posey explains the special performance counters that can be used to get an accurate assessment, and goes on to describe how to test your physical servers to see if they are good candidates for virtualization. … Read more
01 June 2009

Windows Server Virtualisation: Hyper-V, an Introduction

For SQL Server and Exchange Server, Windows Server Virtualization is going to be increasingly important as a way for the administrator to allocate hardware resources in the most efficient way, to offer more robust services, and for deploying services. Jaap Wesellius starts his new series on Hyper-V by explaining what Hyper-V is, how it relates to Windows Server 2008 and how it compares to ESX, Virtual Server and Virtual PC. .… Read more
05 May 2009

A Beginner’s Guide to Virtualizing Exchange Server, Part 1

The advantage of virtualizing your servers is that it helps you make better use of your hardware resources, and reduces some of your licensing costs, However, there are disadvantages: With Exchange server, it isn't always obvious as to which server roles are suitable for virtualization, and it is rather hard to work out what system resources a virtual server is actually using. Brien Posey explains… Read more

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