Upgrading an enterprise View deployment involves several high-level tasks. Upgrading is a multistage process in which procedures must be performed in a particular order. You upgrade View Composer before upgrading View Connection Server and the other View servers.
During an upgrade, View does not support View Composer provisioning and maintenance operations. Operations such as provisioning and recomposing linked-clone desktops are not supported during the transitional period when any View servers are still running the earlier version. You can successfully perform these operations only when all instances of View Connection Server and View Composer have been upgraded.
You must complete the upgrade process in a specific order. Order is also important within each upgrade stage.
This overview relates to upgrades for major, minor, and maintenance releases. For information about patches, see Applying View Patches.
How many of the following tasks you need to complete depends on which components of View you use in your deployment.
On the physical or virtual machines that host View Composer and VMware® vCenter Server™, make backups and temporarily halt certain scheduled tasks. See Preparing vCenter Server and View Composer for an Upgrade.
For details about which versions of View are compatible with which versions of vCenter Server and ESXi, see the VMware Product Interoperability Matrix at http://www.vmware.com/resources/compatibility/sim/interop_matrix.php.
On the physical or virtual machines that host View Connection Server instances, make backups and record various configuration and system settings. See Preparing View Connection Server for an Upgrade.
If you use security servers, make backups and record various configuration and system settings. See Preparing View Security Server for an Upgrade.
Upgrade View Composer on the existing host or migrate to a new machine. See Upgrade View Composer.
Upgrade View Connection Server instances that are not paired with security servers. See Upgrade View Connection Servers in a Replicated Group.Important:
After you upgrade a View Connection Server instance to the latest version, you cannot downgrade that instance to an earlier version. After you upgrade all View Connection Server instances in a replicated group, you cannot add another instance that runs an earlier version.
If you use security servers, upgrade each security server and its paired View Connection Server instance. If you upgrade these pairs one by one, removing each security server from the load-balanced group, upgrading the pair, and then adding the security server back to the group, you can achieve zero downtime. See Upgrade View Security Servers and Their Paired View Connection Servers.
Upgrade the group policies used in Active Directory. See Using View Group Policy Administrative Template Files.
If you are also upgrading VMware vSphere components, upgrade vCenter Server. See Upgrade vCenter Server.
If you are also upgrading vSphere, upgrade the VMware® ESXi™ hosts and virtual machines. See Upgrade ESXi Hosts and Their Virtual Machines.
If you currently use Windows Terminal Services servers as desktop sources, upgrade to Windows Server 2008 R2 or later and verify that the RDS Host role is installed. See Upgrade RDS Hosts That Provide Session-Based Desktops
Upgrade the Horizon™ View Agent™ software that runs on the physical or virtual machines that are used as desktop sources, as full-clone desktops in a pool, and as individual desktops in a manual pool. See Upgrade View Agent.
Use the newly upgraded virtual machine desktop sources to create upgraded pools of desktops. See Upgrade View Composer Desktop Pools.
Upgrade the Horizon Client software that runs on end users' client devices. See Upgrade the Client Application.
If you use the Cloud Pod Architecture feature, see Upgrading View Servers in a Cloud Pod Architecture.
Because certain commands can simultaneously upgrade more than one stage, VMware recommends that you thoroughly understand the irreversible changes at each stage before you upgrade your production environments.
The VMware View® Client with Local Mode feature, for using offline desktops, has been removed, and therefore this overview does not include steps for upgrading View Transfer Server instances and View Client with Local Mode. In place of the Local Mode feature, VMware recommends using VMware® Mirage™, which is included with VMware Horizon 6.0 and later releases. For more information, see the View Release Notes, available at https://www.vmware.com/support/pubs/view_pubs.html.