7.0

Table 9‑2. Worksheet: Configuration Settings for Creating an Automated Farm (Continued)
Setting Description
Fill in Your Value
Here
Use native NFS
snapshots (VAAI)
(Available only if you do not use Virtual SAN) 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.
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 on virtual machines
with space-efficient disks.
This feature is supported on vSphere 5.0 and later.
For details, see “Using VAAI Storage for View Composer Linked
Clones,” on page 253.
Reclaim VM disk space (Available only if you do not use Virtual SAN or Virtual Volumes)
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 View Composer Linked
Clones,” on page 251.
Initiate reclamation
when unused space on
VM exceeds:
(Available only if you do not use Virtual SAN or Virtual Volumes)
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 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 Storage Accelerator and Space Reclamation
Blackout Times for View Composer Linked Clones,” on page 254.
Transparent Page
Sharing Scope
Select the level at which to allow transparent page sharing (TPS). The
choices are Virtual Machine (the default), Farm, Pod, or Global. If
you turn on TPS for all the machines in the farm, pod, or globally, the
ESXi host eliminates redundant copies of memory pages that result if
the machines use the same guest operating system or applications.
Page sharing happens on the ESXi host. For example, if you enable
TPS at the farm level but the farm is spread across multiple ESXi
hosts, only virtual machines on the same host and within the same
farm will share pages. At the global level, all machines managed by
View on the same ESXi host can share memory pages, regardless of
which farm the machines reside in.
NOTE The default setting is not to share memory pages among
machines because TPS can pose a security risk. Research indicates that
TPS could possibly be abused to gain unauthorized access to data in
very limited configuration scenarios.
Chapter 9 Creating Farms
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