Administration

Table 8‑1. Editable Settings in an Existing Desktop Pool (Continued)
Configuration Tab Description
Advanced Storage >
Use native NFS
snapshots (VAAI)
If you select or deselect Use native NFS snapshots (VAAI), the new setting only affects virtual
machines that are created after the settings are changed. You can change existing virtual
machines to become native NFS snapshot clones by recomposing and, if needed, rebalancing the
desktop pool. See "Using View Composer Array Integration with Native NFS Snapshot
Technology" in the Setting Up Desktop and Application Pools in View document.
Advanced Storage >
Transparent Page
Sharing Scope
If you change the Transparent Page Sharing Scope setting, the new setting takes effect the next
time the virtual machine is powered on.
Select the level at which to allow transparent page sharing (TPS). The choices are Virtual
Machine (the default), Pool, Pod, or Global. If you turn on TPS for all the machines in the pool,
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 pool level but the
pool is spread across multiple ESXi hosts, only virtual machines on the same host and within the
same pool will share pages. At the global level, all machines managed by View on the same ESXi
host can share memory pages, regardless of which pool 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.
Fixed Settings in an Existing Desktop Pool
After you create a desktop pool, you cannot change certain configuration settings.
Table 8‑2. Fixed Settings in an Existing Desktop Pool
Setting Description
Pool type After you create an automated, manual, or RDS desktop pool, you cannot change
the pool type.
User assignment You cannot switch between dedicated assignments and floating assignments.
Type of virtual machine You cannot switch between full virtual machines and linked-clone virtual
machines.
Pool ID You cannot change the pool ID.
Machine-naming and provisioning
method
To add virtual machines to a desktop pool, you must use the provisioning
method that was used to create the pool. You cannot switch between specifying
machine names manually and using a naming pattern.
If you specify names manually, you can add names to the list of machine names.
If you use a naming pattern, you can increase the maximum number of machines.
vCenter settings You cannot change vCenter settings for existing virtual machines.
You can change vCenter settings in the Edit dialog box, but the values affect only
new virtual machines that are created after the settings are changed.
View Composer persistent disks You cannot configure persistent disks after a linked-clone desktop pool is created
without persistent disks.
View Composer customization
method
After you customize a linked-clone desktop pool with QuickPrep or Sysprep, you
cannot switch to the other customization method when you create or recompose
virtual machines in the pool.
Chapter 8 Managing Desktop Pools, Machines, and Sessions
VMware, Inc. 141