5.2

Table Of Contents
In this configuration, both View Connection Server and the guest operating system can suspend the virtual
machine. The guest operating system power option might cause the virtual machine to be unavailable when
View Connection Server expects it to be powered on.
Configure View Storage Accelerator for Desktop Pools
You can configure desktop pools to enable ESXi hosts to cache virtual machine disk data. This feature, called
View Storage Accelerator, uses the Content Based Read Cache (CBRC) feature in ESXi hosts. View Storage
Accelerator
can reduce IOPS and improve performance during boot storms, when many desktops start up or
run anti-virus scans at once. The feature is also beneficial when administrators or users load applications or
data frequently. To use this feature, you must make sure that View Storage Accelerator is enabled for individual
desktop pools.
View Storage Accelerator is enabled for a pool by default. You can enable or disable View Storage Accelerator
when you create or edit a pool.
You can enable View Storage Accelerator on pools that contain linked clones and pools that contain full virtual
machines.
View Storage Accelerator is also supported with local mode. Users can check out desktops in pools that are
enabled for View Storage Accelerator. The feature is disabled while a desktop is checked out and reenabled
after the desktop is checked in.
Native NFS snapshot technology (VAAI) is not supported in pools that are enabled for View Storage
Accelerator.
View Storage Accelerator is now qualified to work in configurations that use View replica tiering, in which
replicas are stored on a separate datastore than linked clones. Although the performance benefits of using View
Storage Accelerator with View replica tiering are not materially significant, certain capacity-related benefits
might be realized by storing the replicas on a separate datastore. Hence, this combination is tested and
supported.
When a virtual machine is created, View indexes the contents of each virtual disk file. The indexes are stored
in a virtual machine digest file. At runtime, the ESXi host reads the digest files and caches common blocks of
data in memory. To keep the ESXi host cache up to date, View regenerates the digest files at specified intervals
and when the virtual machine is recomposed. You can modify the regeneration interval.
Prerequisites
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Verify that your vCenter Server and ESXi hosts are version 5.0 or later.
In an ESXi cluster, verify that all the hosts are version 5.0 or later.
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Verify that the vCenter Server user was assigned the Global > Act as vCenter Server privilege in vCenter
Server. See the topics in the VMware Horizon View Installation documentation that describe View Manager
and View Composer privileges required for the vCenter Server user.
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Verify that View Storage Accelerator is enabled in vCenter Server. See “Configure View Storage
Accelerator for vCenter Server,” on page 20.
Chapter 5 Creating Desktop Pools
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