Red Hat NETSCAPE MANAGEMENT SYSTEM 4.5 User Manual download pdf (Page 183)

Configuring and Running Virtual Machines

183

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scsi0.present = TRUE

scsi0.virtualDev = vmxbuslogic

scsi0:2.present = TRUE

scsi0:2.name = vmhba1:3:0:2:data.dsk

In this configuration, scsi0.present = TRUE specifies that the virtual machine

has a SCSI adapter called scsi0 and scsi0.virtualDev = vmxbuslogic

specifies that the virtual machine’s first SCSI adapter accesses data from the VMkernel

SCSI device. Finally, scsi0:2.name = vmhba1:3:0:2:data.dsk specifies

the location of the disk image used for SCSI target 2 on the first virtual SCSI adapter.

The location of the disk image is specified in a notation with the form

<adaptername>:<target>:<lun>:<partition>:<filename>. An

adapter name such as vmhba1 specifies the second physical SCSI adapter activated

by the vmkload_mod .../XXX.o vmhba command. The second component of

the location specifies the ID of the target on the named adapter. The third component

specifies the LUN (logical unit number) and is typically zero. The fourth component

specifies the partition. The last component specifies the name of the disk image in the

VMFS file system on the specified partition.

So scsi0:2.name=vmhba1:3:0:2:data.dsk indicates that the disk image is

in the file data.dsk on partition 2 of the disk at target 3 and LUN 0 on the second

SCSI adapter activated by the vmkload_mod .../XXX.o vmhba command. See

VMkernel Module Loader on page 174 for details on vmkload_mod.

A specification may have a partition specified as 0, in which case it refers to a VMFS

that covers a complete, unpartitioned disk (target). However, if your SCSI adapter is

shared with the console operating system, rather than assigned exclusively to the

VMkernel, you cannot access a VMFS that covers the entire disk. Thus, we recommend

that you always create at least one partition on each disk and create the VMFS within

that partition.

For information on copying an existing virtual disk from the console operating system

to a VMFS file, see Migrating VMware Workstation and VMware GSX Server Virtual

Machines on page 71.

Note: If you have not determined which SCSI target ID corresponds to the disk you

wish to use in the virtual machine, see Determining SCSI Target IDs on page 208.

Access Modes

By default, disk images are accessed in persistent mode. That is, all changes are written

directly to the disk image and cannot be undone. This mode provides the most

efficient access to the data. ESX Server also supports nonpersistent, undoable and

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Red Hat NETSCAPE MANAGEMENT SYSTEM 4.5 User Manual Page 183