Starting with vSphere 5.5 Update 1, you can use the Virtual SAN feature for high-performance storage and policy-based management. Upgrading pools to use this feature involves changing a pool setting and then rebalancing the pool.

With Virtual SAN, the locally attached physical storage disks available on a cluster of vSphere hosts are aggregated into one virtual datastore. You specify this datastore when creating a desktop pool, and the various components, such as virtual machine files, replicas, user data, and operating system files, are placed on the appropriate solid-state drive (SSD) disks or direct-attached hard disks (HDDs).

View defines virtual machine storage requirements, such as capacity, performance, and availability, in the form of default storage policy profiles, depending on the pool settings used. Storage is provisioned and automatically configured according to the assigned policies.

Note:

The space reclamation feature is not supported if your virtual machine desktops are hosted on Virtual SAN datastores.

Upgrading from View 5.3.1 on a Virtual SAN Datastore

Horizon 6.0 with View introduced some new default storage policies for Virtual SAN. These policies will not automatically apply to existing virtual machine desktops created on Virtual SAN by View 5.3.1 after the desktop pool is upgraded to 6.0. In addition, when you upgrade from View 5.3.1, the Use VMware Virtual SAN pool setting will not automatically be enabled, even if the pool is on a Virtual SAN datastore. You have the following upgrade options:

  • After upgrading, continue to use the default storage policies that were used with View 5.3.1. If you choose this option, edit the pool settings so that Use VMware Virtual SAN is enabled.

  • Use the procedure described in this topic so that the desktop pool uses the new default storage policies. This procedure involves rebalancing the desktop pool to a non-Virtual SAN datastore and then upgrading and rebalancing back to the Virtual SAN datastore.

Important:

The tasks outlined in this procedure describe upgrading from a View 5.3.1 desktop pool using a Virtual SAN datastore on a VMware vSphere 5.5 Update 1 cluster. Upgrading from Virtual SAN datastore on a VMware vSphere 5.5 or earlier cluster (a Tech Preview feature) is not supported.

Also, because this procedure involves recomposing the desktop pool, any changes that end users have made to the operating system disk will be lost.

  1. Verify that all virtual machines in the pool are VMware vSphere 5.5 Update 1 or later virtual machines.

  2. Edit the pool settings of the desktop pool to change the datastore from a Virtual SAN datastore to a non-Virtual SAN datastore, and use the Rebalance command.

    For instructions on editing server settings and using the Rebalance command, click the Help button in View Administrator.

  3. Upgrade the desktop pool to the latest version, as described in Upgrade View Composer Desktop Pools.

    This process includes installing the latest version of View Agent on the parent virtual machine and taking a snapshot.

  4. Recompose the pool on the non-Virtual SAN datastore using the snapshot of the parent virtual machine you just created.

    For instructions on recomposing pools, click the Help button in View Administrator.

  5. Edit the pool settings of the newly upgraded desktop pool to change the datastore from a non-Virtual SAN datastore to a Virtual SAN datastore, and use the Rebalance command.

Upgrading from a Non-Virtual SAN Datastore to a Virtual SAN Datastore

The tasks outlined in this procedure describe upgrading from a non-Virtual SAN datastore to a Virtual SAN datastore. Upgrading from Virtual SAN datastore on a VMware vSphere 5.5 or earlier cluster (a Tech Preview feature) is not supported.

Important:

Because this procedure involves recomposing the desktop pool, any changes that end users have made to the operating system disk will be lost.

  1. Verify that all ESXi hosts in the cluster used for the pool are upgraded to 5.5 Update 1 or later and that they meet the system requirements for the Virtual SAN feature.

    For information about upgrades, see Upgrade ESXi Hosts and Their Virtual Machines and see the VMware vSphere Upgrade Guide. For information about Virtual SAN requirements, see the vSphere Storage document.

  2. If all virtual machines in the pool are not VMware vSphere 5.5 Update 1 or later virtual machines, upgrade them.

    For instructions, see Upgrade ESXi Hosts and Their Virtual Machines and see the VMware vSphere Upgrade Guide.

  3. Use vCenter Server 5.5 Update 1 or later to enable Virtual SAN for the vSphere cluster.

    For more information, see the vSphere Storage document.

  4. Upgrade the desktop pool to the latest version, as described in Upgrade View Composer Desktop Pools.

    This process includes installing the latest version of View Agent on the parent virtual machine and taking a snapshot.

  5. Recompose the pool on the non-Virtual SAN datastore using the snapshot of the parent virtual machine you just created.

    For instructions on recomposing pools, click the Help button in View Administrator.

  6. Edit the pool settings of the newly upgraded desktop pool to enable the Use VMware Virtual SAN pool setting, change the datastore from a non-Virtual SAN datastore to a Virtual SAN datastore, and use the Rebalance command.

    For instructions on editing server settings and using the Rebalance command, click the Help button in View Administrator.