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VMware Cookbook by Matthew Helmke, Ryan Troy

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Chapter 2. Storage

Storage will be one of the key components in your virtualized environment. In this chapter we will look at the different types of storage and ways to successfully configure and use them within the ESX environment.

2.1. Comparing ESX Storage Options

Problem

You want to know which network storage types ESX supports and what each type offers.

Solution

Review the comparison tables in this recipe.

Discussion

Table 2-1 lays out the types of storage ESX supports. Table 2-2 lists the features different storage types can utilize in ESX. It’s important to understand the technologies and their capabilities and limitations when setting up your ESX environment.

Table 2-1. Storage options for VMware ESX Servers

Technology

Protocols

Transfer

Interface

Fibre Channel

FC/SCSI

Block access/LUN

FC host bus adapter (HBA)

Local storage

SCSI/SAS

Block access

Local SCSI or SAS controller

iSCSI

IP/SCSI

Block access/LUN

iSCSI HBA for hardware iSCSI Ethernet card for software iSCSI

NAS

IP/NFS

File level

Ethernet card

Table 2-2. Storage features offered by types of storage on VMware ESX Servers

Type

Boot VM

VMotion

RDM

VMCluster

Datastore

HA and DRS

SCSI

Yes

No

No

No

VMFS

No

Fibre Channel

Yes

Yes

Yes

Yes

VMFS

Yes

iSCSI

Yes

Yes

Yes

No

VMFS

Yes

NAS/NFS

Yes

Yes

No

No

NFS

Yes

2.2. Storage Device Naming Scheme

Problem

You wish to understand how ESX names its devices when working with storage in ESX.

Solution

This recipe breaks down the naming scheme so you can understand how it works.

Discussion

The format of a storage device name in ESX consists of three or ...

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