Dell VMware ESX Server 3i Instalační příručka stáhnout pdf (Strana 71)

VMware, Inc. 71

Chapter 3 Installing and Configuring ESX Server on Blade Servers

SAN Storage

Fibre Channel SANs are the preferred storage media for ESX Server and VirtualCenter

in a blade environment, due to the following advantages:

! SAN storage may be shared among multiple blades (and other systems), thus

allowing storage consolidation. Often, this is a much more efficient use of storage

resources than dedicated, per-system, RAID-protected storage.

! Blade systems support redundant host bus adapters (HBAs) to meet High

Availability needs.

! The storage is more reliable (RAID5 with hot spares compared to RAID1).

! Storage is unlimited compared to the storage that fits on a single local SCSI disk.

! A shared SAN is required for using VMotion with VirtualCenter.

! Images, templates, and so on, may be shared between multiple ESX Server

systems.

Fibre Channel Connectivity

As listed in “HP Blade Server Hardware Requirements” on page 70, HP blades require

a specific Fibre Channel interconnect in the blades enclosure, to support external Fibre

Channel connectivity to a FC SAN. The latest list of supported SAN configurations and

devices is available at www.vmware.com/products/server/esx_specs.html.

VMotion

For you to use VMotion, all blades in a VirtualCenter farm need access to the same

logical unit number (LUN) on a SAN. Consequently, VMFS volumes, containing the

virtual machine virtual disk (.vmdk) files, must be on a shared SAN.

Core Dump Partition

ESX Server core dump partitions must be on a controller visible to the virtual machines

(VMkernel). We recommend that you create ESX Server core dump partitions on a local

SCSI drive.

Swap File

ESX Server swap partitions must be on a controller visible to the virtual machines

(VMkernel). We recommend that you create ESX Server swap partitions on a local SCSI

drive.

OTE VMotion is not supported for virtual machines hosted on local storage. The virtual

machines must reside on a shared SAN accessible by ESX Server.

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Dell VMware ESX Server 3i Instalační příručka Strana 71