6.0

You can use Storage vMotion or cross-host Storage vMotion to transform virtual disks from one format to
another.
Thick Provision Lazy
Zeroed
Creates a virtual disk in a default thick format. Space required for the virtual
disk is allocated when the disk is created. Data remaining on the physical
device is not erased during creation, but is zeroed out on demand at a later
time on rst write from the virtual machine. Virtual machines do not read
stale data from the physical device.
Thick Provision Eager
Zeroed
A type of thick virtual disk that supports clustering features such as Fault
Tolerance. Space required for the virtual disk is allocated at creation time. In
contrast to the thick provision lazy zeroed format, the data remaining on the
physical device is zeroed out when the virtual disk is created. It might take
longer to create virtual disks in this format than to create other types of
disks.
Thin Provision
Use this format to save storage space. For the thin disk, you provision as
much datastore space as the disk would require based on the value that you
enter for the virtual disk size. However, the thin disk starts small and at rst,
uses only as much datastore space as the disk needs for its initial operations.
If the thin disk needs more space later, it can grow to its maximum capacity
and occupy the entire datastore space provisioned to it.
Thin provisioning is the fastest method to create a virtual disk because it
creates a disk with just the header information. It does not allocate or zero
out storage blocks. Storage blocks are allocated and zeroed out when they
are rst accessed.
N If a virtual disk supports clustering solutions such as Fault Tolerance,
do not make the disk thin.
Change the Virtual Disk Configuration in the VMware Host Client
If you run out of disk space, you can increase the size of the disk. You can change the virtual device node
and the persistence mode of virtual disk conguration of a virtual machine.
Prerequisites
Power o the virtual machine.
Verify that you have the following privileges:
n
Virtual machine..Modify device  on the virtual machine.
n
Virtual machine..Extend virtual disk on the virtual machine.
n
Datastore.Allocate space on the datastore.
Procedure
1 Click Virtual Machines in the VMware Host Client inventory.
2 Right-click a virtual machine in the list and select Edit  from the pop-up menu.
3 On the Virtual Hardware tab, expand the hard disk to view all disk options.
4 (Optional) To change the size of the disk, enter a new value in the text box and select the units from the
drop-down menu.
Chapter 3 Virtual Machine Management with the VMware Host Client
VMware, Inc. 59