7.0

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Native NFS snapshot technology (VAAI) is not supported on virtual machines with space-efficient
disks.
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This feature is not available if you use a Virtual SAN datastore or a Virtual Volumes datastore.
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See VMware Knowledge Base (KB) article 2061611 for answers to frequently asked questions about
VCAI support in View.
IMPORTANT NAS storage vendors might provide additional settings that can affect the performance and
operation of VAAI. You should follow the vendor's recommendations and configure the appropriate
settings on both the NAS storage array and ESXi. See your storage vendor documentation for guidance on
configuring vendor-recommended settings.
Set Storage Accelerator and Space Reclamation Blackout Times for
View Composer Linked Clones
For View Composer linked clones, regenerating digest files for View Storage Accelerator and reclaiming
virtual machine disk space can use ESXi resources. 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.
NOTE For instant clones, this feature is not needed.
For example, you can specify a blackout period during weekday morning hours when users start work, and
boot storms and anti-virus scanning I/O storms take place. You can specify different blackout times on
different days.
Disk space reclamation and View Storage Accelerator digest file regeneration do not occur during blackout
times that you set. You cannot set separate blackout times for each operation.
View allows View Storage Accelerator digest files to be created for new machines during the provisioning
stage, even when a blackout time is in effect.
The following procedure applies to linked-clone desktop pools. The steps are similar for automated farms.
Prerequisites
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Verify that Enable View Storage Accelerator, Enable space reclamation, or both features are selected
for vCenter Server.
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Verify that Use View Storage Accelerator, Reclaim VM disk space, or both features are selected for the
desktop pool.
Procedure
1 On the Advanced Storage page in the Add Desktop Pool wizard, go to Blackout Times and click Add.
If you are editing an existing pool, click the Advanced Storage tab.
2 Check the blackout days and specify the starting and ending times.
The time selector uses a 24-hour clock. For example, 10:00 is 10:00 a.m., and 22:00 is 10:00 p.m.
3 Click OK.
4 To add another blackout period, click Add and specify another period.
5 To modify or remove a blackout period, select the period from the Blackout times list and click Edit or
Remove.
Setting Up Desktop and Application Pools in View
254 VMware, Inc.