6.7

Table Of Contents
Required privileges:
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Virtual machine .Snapshot management.Remove Snapshot
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Virtual machine.Configuration.Modify device settings
Procedure
1 Right-click a virtual machine in the inventory and select Edit Settings.
2 On the Virtual Hardware tab, expand Hard disk, and select an independent disk mode option.
Option Description
Independent - Persistent Disks in persistent mode behave like conventional disks on your physical
computer. All data written to a disk in persistent mode are written permanently to
the disk.
Independent - Nonpersistent Changes to disks in nonpersistent mode are discarded when you power off or
reset the virtual machine. With nonpersistent mode, you can restart the virtual
machine with a virtual disk in the same state every time. Changes to the disk are
written to and read from a redo log file that is deleted when you power off or reset.
3 Click OK.
Taking a Snapshot
Snapshots capture the entire state of the virtual machine at the time you take the snapshot. You can take
a snapshot when a virtual machine is powered on, powered off, or suspended. If you are suspending a
virtual machine, wait until the suspend operation finishes before you take a snapshot.
When you create a memory snapshot, the snapshot captures the state of the virtual machine's memory
and the virtual machine power settings. When you capture the virtual machine's memory state, the
snapshot operation takes longer to complete. You might also see a momentary lapse in response over the
network.
When you quiesce a virtual machine, VMware Tools quiesces the file system in the virtual machine. The
quiesce operation pauses or alters the state of running processes on the virtual machine, especially
processes that might modify information stored on the disk during a restore operation.
Application-consistent quiescing is not supported for virtual machines with IDE or SATA disks.
Note If you take a snapshot of a Dynamic Disk (Microsoft specific disk type), the snapshot technology
preserves the quiesce state of the file system, but does not preserve the quiesce state of the application.
Prerequisites
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If you are taking a memory snapshot of a virtual machine that has multiple disks in different disk
modes, verify that the virtual machine is powered off. For example, if you have a special purpose
configuration that requires you to use an independent disk, you must power off the virtual machine
before taking a snapshot.
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To capture the memory state of the virtual machine, verify that the virtual machine is powered on.
vSphere Virtual Machine Administration
VMware, Inc. 248