6.0

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Migrating a powered off virtual machine. This task is cancelable only when the source disks have not
been deleted.
If your vSphere environment uses virtual services, you can also cancel the following scheduled tasks:
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Change the power state of a virtual machine
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Make a snapshot of a virtual machine
Policy Rules for Task Operations
The vCenter Server system and ESXi hosts adhere to certain rules when managing tasks.
The vCenter Server system and ESXi hosts use the following rules to process tasks:
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The user performing the task in the vSphere Client must have the correct permissions on the relevant
objects. After a scheduled task is created, it will be performed even if the user no longer has permission
to perform the task.
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When the operations required by manual tasks and scheduled tasks conflict, the activity due first is
started first.
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When a virtual machine or host is in an incorrect state to perform any activity, manual or scheduled,
vCenter Server or the ESXi host does not perform the task. A message is recorded in the log.
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When an object is removed from the vCenter Server or the ESXi host, all associated tasks are also
removed.
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The vSphere Client and vCenter Server system use UTC time to determine the start time of a scheduled
task. This ensures vSphere Client users in different time zones see the task scheduled to run at their
local time.
Events are logged in the event log at start and completion of a task. Any errors that occur during a task are
also recorded in the event log.
CAUTION Do not schedule multiple tasks to be performed at the same time on the same object. The results
are unpredictable.
Chapter 5 Managing Tasks
VMware, Inc. 57