5.2

Table 5-3. Worksheet: Configuration Options for Creating a Linked-Clone Desktop Pool
(Continued)
Option Description Fill In Your Value Here
Use native NFS snapshots (VAAI)
- Tech Preview
If your deployment includes NAS devices that
support the vStorage APIs for Array Integration
(VAAI), you can use native snapshot technology
to clone virtual machines.
NOTE
Native NFS snapshot technology (VAAI) is
a Tech Preview feature. The feature is available for
you to try out, but it is not recommended for
production use and no support is provided.
You can use this feature only if you select
datastores that reside on NAS devices that support
native cloning operations through VAAI.
You cannot use this feature if you store replicas
and OS disks on separate datastores. You cannot
use this feature in a pool that is enabled for View
Storage Accelerator or virtual machine disk space
reclamation.
This feature is supported on vSphere 5.0 and later.
For details, see “Using View Composer Array
Integration with Native NFS Snapshot Technology
(VAAI),” on page 114.
Reclaim VM disk space Determine whether to allow ESXi hosts to reclaim
unused
disk space on linked clones that are created
in space-efficient disk format. The space
reclamation feature reduces the total storage space
required for linked-clone desktops.
This feature is supported on vSphere 5.1 and later.
The linked-clone virtual machines must be virtual
hardware version 9 or later.
For details, see “Reclaim Disk Space on Linked-
Clone Desktops,” on page 115.
Initiate reclamation when unused
space on VM exceeds:
Type the minimum amount of unused disk space,
in gigabytes, that must accumulate on a linked-
clone OS disk to trigger space reclamation. When
the unused disk space exceeds this threshold,
View initiates the operation that directs the ESXi
host to reclaim space on the OS disk.
This value is measured per virtual machine. The
unused disk space must exceed the specified
threshold on an individual virtual machine before
View starts the space reclamation process on that
machine.
For example: 2 GB.
The default value is 1 GB.
Blackout Times Configure days and times during which View
Storage Accelerator regeneration and the
reclamation of virtual machine disk space do not
take place.
To ensure that ESXi resources are dedicated to
foreground
tasks when necessary, you can prevent
the ESXi hosts from performing these operations
during specified periods of time on specified days.
For details, see “Set Blackout Times for ESXi
Operations on View Desktops,” on page 116.
VMware Horizon View Administration
98 VMware, Inc.