Administration

Table Of Contents
To enable space reclamation operations, you must use Horizon Administrator to enable space
reclamation for vCenter Server and reclaim VM disk space for individual desktop pools. The space
reclamation setting for vCenter Server gives you the option to disable this feature on all desktop
pools that are managed by the vCenter Server instance. Disabling the feature for vCenter Server
overrides the setting at the desktop pool level.
The following guidelines apply to the space reclamation feature:
n It operates only on space-efficient OS disks in linked clones.
n It does not affect View Composer persistent disks.
n It works only with vSphere 5.1 or later and only on virtual machines that are virtual hardware
version 9 or later.
n It does not operate on full-clone desktops.
n It operates on virtual machines with SCSI controllers. IDE controllers are not supported.
Native NFS snapshot technology (VAAI) is not supported in pools that contain virtual machines
with space-efficient disks.
Prerequisites
n Verify that your vCenter Server and ESXi hosts, including all ESXi hosts in a cluster, are version
5.1 with ESXi 5.1 download patch ESXi510-201212001 or later.
Procedure
1 In Horizon Administrator, complete the Add vCenter Server wizard pages that precede the
Storage Settings page.
a Select View Configuration > Servers.
b On the vCenter Servers tab, click Add.
c Complete the vCenter Server Information, View Composer Settings, and View Composer
Domains pages.
2 On the Storage Settings page, make sure that Enable space reclamation is selected.
Space reclamation is selected by default if you are performing a fresh installation of Horizon 7
5.2 or later. You must select Enable space reclamation if you are upgrading to Horizon 7 5.2
or later from Horizon 7 5.1 or an earlier release.
What to do next
On the Storage Settings page, configure View Storage Accelerator.
To finish configuring disk space reclamation in Horizon 7, set up space reclamation for desktop
pools.
Horizon 7 Administration
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