VMware GSX Server 3 Administration Instalační příručka stáhnout pdf (Strana 286)

www.vmware.com

294

VMware ESX Server Administration Guide

Labelling VMFS Volumes

If you create a VMFS volume on a SCSI disk or partition, you can give a label to that

volume and use that label when specifying VMFS files on that volume. For instance,

suppose you have a VMFS volume on the SCSI partition vmhba0:3:0:1 and have

created a VMFS file nt4.dsk. You can label that volume by using a vmkfstools

command such as:

vmkfstools -S mydisk vmhba0:3:0:1

You can then refer to the nt4.dsk file as mydisk:nt4.dsk (instead of

vmhba0:3:0:1:nt4.dsk) in a virtual machine configuration file and in other

vmkfstools commands. For more information on vmkfstools, see vmkfstools

Options on page 297.

If there is no persistent binding, then labelling VMFS volumes is especially useful if you

may be adding SCSI adapters or disks to your system. The actual disk and target

numbers specifying a particular VMFS may change, but the label stays the same. Also,

other ESX Servers see the same label, which is useful for LUN ID between servers.

For more information, see Using Persistent Binding on page 320.

VMFS Accessibility

There are two modes for accessing VMFS volumes: public and shared.

• public — This is the default mode for ESX Server.

With a public VMFS version 1 (VMFS-1) volume, multiple ESX Server computers

have the ability to access the VMware ESX Server file system, as long as the VMFS

volume is on a shared storage system (for example, a VMFS on a storage area

network). However, only one ESX Server can access the VMFS volume at a time.

With a public VMFS version 2 (VMFS-2) volumes, multiple ESX Server computers

can access the VMware ESX Server file system concurrently. VMware ESX Server

file systems with a public mode have automatic locking to ensure file system

consistency.

• shared — Used for a VMFS volume that is used for failover-based clustering

among virtual machines on the same or different ESX Servers.

For more information on clustering with ESX Server, see Configuration for

Clustering on page 329.

Note: In ESX Server 2.1, private VMFS volumes are deprecated. If you have existing

VMFS version 1 (VMFS-1) or VMFS version 2 (VMFS-2) private volumes, then you can

continue to use them, but we recommend you change the access mode to public.

There is no performance penalty in making this change.

1 2 ... 281 282 283 284 285 286 287 288 289 290 291 ... 435 436

Žádné komentáře

VMware GSX Server 3 Administration Instalační příručka Strana 286