6.0

4 Select the type of disk to use.
Option Action
Create a new virtual disk
a Type the disk capacity.
b Select a disk format.
n
Thick Provision Lazy Zeroed creates a virtual disk in a default
thick format.
n
Thick Provision Eager Zeroed creates a type of thick virtual disk
that supports clustering features such as Fault Tolerance.
n
Thin Provision creates a disk in thin format. Use this format to
save storage space.
c Select a location to store the disk. Store with the virtual machine or
Specify a datastore.
d If you selected Specify a datastore, browse for the datastore location,
and click Next.
Use an Existing Virtual Disk
Browse for the disk file path and click Next.
Raw Device Mappings
Gives your virtual machine direct access to SAN.
a Select the LUN to use for the raw disk, and click Next.
b Select the datastore and click Next.
c Select the compatibility mode.
n
Physical allows the guest operating system to access the hardware
directly.
n
Virtual allows the virtual machine to use VMware snapshots and
other advanced functions.
d Click Next.
5 Accept the default or select a different virtual device node.
In most cases, you can accept the default device node. For a hard disk, a nondefault device node is
useful to control the boot order or to have different SCSI controller types. For example, you might want
to boot from an LSI Logic controller and share a data disk with another virtual machine using a
BusLogic controller with bus sharing turned on.
6 (Optional) To change the way disks are affected by snapshots, click Independent and select an 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.
7 Click Next.
8 Review the information and click Finish.
9 Click OK to save your changes.
Use Disk Shares to Prioritize Virtual Machines in the vSphere Client
You can change the disk resources for a virtual machine. If multiple virtual machines access the same VMFS
datastore and the same logical unit number (LUN), use disk shares to prioritize the disk accesses from the
virtual machines. Disk shares distinguish high-priority from low-priority virtual machines.
You can allocate the host disk's I/O bandwidth to the virtual hard disks of a virtual machine. Disk I/O is a
host-centric resource so you cannot pool it across a cluster.
vSphere Administration with the vSphere Client
162 VMware, Inc.