Red Hat NETSCAPE MANAGEMENT SYSTEM 4.5 User Manual download pdf (Page 190)

Configuring and Running Virtual Machines

190

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Suspending and Resuming Virtual

Machines

This section contains the following:

• Setting the Suspend Directory on page 190

• Enabling Repeatable Resumes on page 191

Suspending a virtual machine, then later resuming its operation, can speed

provisioning tasks — for example, deployment of standby servers. VMware ESX Server

supports two configurations for resuming a suspended virtual machine.

• You can suspend a running virtual machine at any time, then resume operation,

suspend at a later time, then resume with the machine in the second state, and

so on.

• You can suspend a virtual machine at any desired point in its operation, then

lock in the suspended state at that chosen point. Any time you restart the virtual

machine, it resumes in the same state — the state it was in when you first

suspended it.

Note: You should not change a configuration file after you suspend a virtual

machine, since the virtual machine does not resume properly if the configuration file

is inconsistent with the suspended virtual machine. Also, you should not move any

physical disks or change the name of any VMFS file systems that the virtual machine

uses. If you do, the virtual machine will not be able to access its virtual disks when it

resumes.

You can also set the configuration of each virtual machine so the file that stores

information on the suspended state is saved in a location of your choice.

Note: You cannot suspend a virtual machine configured to use more than 2GB of

RAM.

Setting the Suspend Directory

When a virtual machine is suspended, its state is written to a file with a .vmss

extension. By default, the .vmss file is written to the same directory as the

configuration file. Similarly, when a virtual machine is being resumed, ESX Server looks

for the .vmss file in the same directory as the configuration file.

You may want to select a different location for better performance or to avoid running

out of space on the partition that holds the virtual machine directories.

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Red Hat NETSCAPE MANAGEMENT SYSTEM 4.5 User Manual Page 190