Greg Shields


Greg Shields is a partner and principal technologist with Concentrated Technology, an IT analysis and strategic consulting firm. Contact him at Greg Shields is a partner and principal technologist with Concentrated Technology, an IT analysis and strategic consulting firm. Contact him at

Q: Which 3 rights are required for the vCenter Server service domain user account?
When an Active Directory domain user account is used on a VMware vCenter Server, that account must be granted 3 rights.
Q: What are the guidelines for sharing databases in VMware vCenter Server 5.0?
VMware offers specific guidelines for database sharing in vCenter Server 5.0.
Q: How do I install Microsoft .NET Framework 3.5 SP1 to support vCenter Server 5.0?
You can install Microsoft.NET Framework from the Windows Server 2008 R2 server's Server Manager; however, there's a trick to doing it correctly.
Q: Can I change the BIOS boot type on an ESXi 5.0 Server after installation?
Changing the BIOS boot type from Legacy BIOS to UEFI after installing VMware ESXi 5.0 can cause the host to fail to boot.
Q: What are the US government federal guidelines on the use of cloud computing?
A recent publication outlines the US federal government's recommendations for organizations considering use of public cloud services.
Q: What is context-aware computing, and how might it aid healthcare IT? 1
Citrix XenApp and XenDesktop context-aware computing solutions add situational relevance, such as running applications and connected devices, to user sessions.
Q: What 6 application delivery approaches can Citrix XenApp and XenDesktop facilitate? 1
Virtualization infrastructures such as Citrix XenApp or XenDesktop can be used to circumvent the traditional methods of application delivery.
Q: What inexpensive hardware upgrade would improve VM performance on my desktop or laptop?
Adding a solid state disk (SSD) can be your best solution for improving virtual machine (VM) performance.
Q: What is the Citrix License Server virtual appliance? 2
The Citrix License Server delivers all your XenServer licensing needs in a streamlined virtual appliance, avoiding the need to run an additional Windows server.
Q: What ports and connections are used by XenServer?
Learn the main TCP ports Citrix XenServer uses for communication and what each port is used for.
Q: What Active Directory configurations are supported by XenDesktop 5.5?
Citrix XenDesktop 5.5 supports deployment to environments with a wide variety of Active Directory (AD) configurations.
Q: What extra steps are necessary to add a vSphere 5 host to a XenDesktop 5.5 site? 2
Citrix XenDesktop 5.5 supports virtual machines (VMs) atop vSphere 5; follow these simple steps to avoid a problem with your initial connection.
Q: In XenDesktop, in what order must the XenDesktop Virtual Desktop Agent and VMware Tools be installed onto a vSphere VM?
Because XenDesktop serves a unique role in a data center's virtualization infrastructure, it's important to install drivers correctly.
Q: What role does Citrix XenDesktop's Desktop Director play?
Desktop Director enables IT administrators to handle a large number of desktops, and it provides a web-based interface for Help desk staff to assist users and perform daily maintenance activities.
Q: How are XenDesktop's administrative roles designed to separate duties?
Citrix XenDesktop 5.5's five administrative roles separate duties between individuals managing a Virtual Desktop Infrastructure (VDI) environment.
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