A brief post
based on experience.
Recommended:
In-place upgrade of vCenter
The in-place upgrade
from vCenter 4.1 to vCenter 5 is a quick and easy process. With the
upgrade there would be less than one hours downtime whilst desktop
groups should be in maintenance mode and the Citrix XenDesktop
Controller will not be able to control the power state of virtual
desktops, but end users can still continue to work (if a user is
already logged on, maintenance mode takes effect as soon as they log
off.)
A vCenter rebuild would
have incurred having to add the new vCenter as a host in Citrix
Desktop Studio, and further re-add all desktops, and re-create any
catalogs.
Recommended:
In-place upgrade of ESXi hosts
The in-place upgrade
from ESXi 4.1 to 5 is a quick and easy process via vCenter 5 Update
Manager, and saves having to reconfigure hosts and remount any NFS
datastores (NFS is recommended for VDI deployments due to its
scalability,) especially in environments where Host Profiles and/or
Auto Deploy is not an option due to host licensing (i.e. not
Enterprise Plus.)
The Citrix XenDesktop
Controller communicates with the vCenter Server, and the
recommendation regarding upgrading the ESXi hosts is just here for
completeness.
Warning: When
installing/upgrading VMware Tools
to vSphere 5
Use the Custom Installation option to deselect
the SVGA 3D Driver under the VMware Device Drivers feature
set.
See the following
articles for more information:
http://support.citrix.com/article/CTX124877
- Unable to Connect to XenDesktop Virtual Desktop Agent on Vista or
Windows 7 with WDDM Driver
http://support.citrix.com/article/CTX123952
- Unable to Connect to XenDesktop Virtual Desktop Agent on Windows 7
with VMware Tools ESX 4.0 Update 1
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