Tag Archive: Virtualization

Jul 13 2015

Migrating a Hyper-V Cluster to Windows Server 2012 R2

I know that migrating a Windows cluster is not an easy job and an in-place upgrade is not possible in the Windows world, not right now anyway. The hard part is where you need to request a maintenance widow from the service owners because production is going to be affected. VMs will need to be …

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Jun 22 2015

Installing and configuring VMware vSphere Data Protection (VDP)

You might think that your machines are safe and that you have nothing to worry about once you virtualize your infrastructure, but that’s not true. Virtual machines need backups, the same as physical machines do. This is not necessarily because of a host crash or any other hardware problem,

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Jan 13 2015

Deploying and Configuring VMware vCenter Server Appliance 5.x

VMware vCenter Server Appliance or vCSA for short, has greatly improved compared to previous versions, and in version 5.5 which I’ll discuss in this article some most wanted limitations were lifted. Now it can support up to 100 vSphere/ESXi hosts and 3.000 virtual machines with the integrated vPostgress database, which is more than enough for …

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Jan 06 2015

Add a vCenter Single Sign On (SSO) Active Directory (AD) Identity Source

Starting with version 5.1 VMware introduced a new service in the vCenter Infrastructure suite called vCenter Single Sign On (SSO). The addition of this new service greatly improved the security of VMware’s cloud services by allowing them to communicate to each other trough a secure token exchange mechanism. The other benefit is that users will …

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Oct 29 2014

Configure Syslog on ESXi 5.x Hosts

No matter how small or how big your VMware infrastructure is, you still want to know what’s happening on your hosts, and most of the time for security reasons. You also need to be alerted in case something goes wrong or might go wrong, who’s logging in and logging out etc. All those actions I …

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Jul 13 2014

Creating and Using VMware Guest Customization Specification

I know many of you deploy a lot of  VMs in you VMware Infrastructure. Been there, and still doing that. I also know that most of you are using PowerCLI to automate the deployments to make time for some reading; but there are things that need to be done in the guest OS during the …

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Mar 09 2014

Configuring Hyper-V Replica in Windows Server 2012/R2

I’ve been thinking for a while to write this article, and eventually I did it. For those that don’t know what Hyper-V Replica is, I will try to summarize it. Is a host-based replication in the hypervisor, and we are talking about Hyper-V here, at no extra costs; its free. By implementing this feature, you …

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Dec 24 2013

Creating a persistent scratch location on ESXi

When you install your ESXi host(s) on a flash drive, which is pretty common in an enterprise environment you will get a message on the Summary tab in your vSphere client or Web client interface “System logs on <ESXi host> are stored on non-persistent storage“.

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Dec 01 2013

Configuring VMware High Availability (VMHA)

OK, you created your VMware cluster but the VM’s are not protected from hosts failure, and by not protected I mean your VM’s will not be automatically migrated to a working ESXi host and automatically powered on. They will be left in a powered off and not available state. The second bad thing about this …

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Jul 28 2013

Delegate Access Control and Management in Hyper-V

In a virtual environment security is vital, because you can’t give full permissions to everyone. Imagine just for a moment if a user connects to one of your Hyper-V servers, and by mistake power’s off some of the VM’s, or even worse, deletes them. But the user still needs access to his VM, right ? …

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