Setup Guide

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36 Configuring Storage

XenServer Dell Edition comes pre-installed with the open-iSCSI initiator that

can be used to connect to

PowerVault MD3000i storage

arrays. Alternatively,

a software iSCSI initiator inside a virtual machine (VM) can be used to add a

storage volume from

PowerVault MD3000i storage

array. By default, the physical

network interface on which the XenServer management interface is configured

is chosen to route the IP storage traffic. However, a physical interface or a bond

of multiple interfaces can be configured to segregate storage traffic from

management traffic. For more details on specific configuration steps, see "High

Availability Configuration and IP Storage Traffic Segregation" on page 49.

NOTE: For specific steps on using MD3000i with an iSCSI initiator running inside a

virtual machine, see the Software Installation section of MD3000i Systems

Installation Guide available on the Dell Support website at

support.dell.com/manuals.

Creating an SR on PowerVault MD3000i Storage Arrays

To create an SR on a storage volume on a PowerVault MD3000i storage array:

Change the iSCSI IQN of the XenServer host to a string of your choice by

selecting the host in Citrix XenCenter™, viewing its

General

tab, and

clicking the

Edit

button.

The

Edit General Settings

dialog box is displayed, where you can modify

the iSCSI IQN string.

Using the MDSM interface, create virtual disks on the PowerVault

MD3000i storage enclosure using the steps described in

Dell PowerVault

Modular Disk Storage Manager User’s Guide

available on the

Dell Support website at

support.dell.com/manuals

. Ensure that the

XenServer hosts have a physical path to the controller which owns the

newly created virtual disk.

From the

Mappings

tab in the Storage Array Profile window, note the

controller number which owns the newly-created volume. If you wish to

provide the XenServer hosts access to more than one volume, ensure all

the volumes are on the same PowerVault MD3000i MD3000i controller.

To change the controller that owns a volume, in the MDSM interface:

Go to

Modify

→

Change Virtual Disk Ownership/Preferred Path

Select the appropriate Disk Group and the virtual disk.

Select RAID Controller Module 0 or 1 as the virtual disk owner and

click

Change