Setup Guide

58 Configuring Storage
Creating a Storage Repository on Dell PS Series Arrays
With XenServer 5.0, two types of SRs can be created on PS Series arrays:
• LVM Over iSCSI (lvmoiscsi) SRs utilize the Linux Volume Manager
(LVM) to create a logical volume per virtual disk image (VDI). The entire
volume on the PS Series array is used to hold VDIs.
• EqualLogic (equal) SRs utilize the XenServer storage adapter to manage
VM storage on PS Series arrays. For each XenServer VDI, a corresponding
volume on the PS Series array is created, allowing for advanced VM
lifecycle operations, such as snapshots, fast clones, thin provisioning, etc.
Creating an LVM Over iSCSI (lvmoiscsi) SR
1 Configure the EqualLogic storage array, create a group, set a member
RAID policy, and create a volume by following the instructions available in
the PS Series Storage Arrays Quickstart guide available on the Dell
EqualLogic PS Series iSCSI SAN Arrays website at
equallogic.com/products .
2 Enable shared access from multiple initiators for the storage volume:
a In the PS series group manager user interface, right-click the storage
volume, and click
Modify Volume Settings .
b Click the Advanced tab, and then click to check Enable shared access
to the iSCSI target from multiple initiators
.
3 Return to XenCenter and create an SR by connecting to the desired
XenServer host (pool master if adding storage to a pool) and clicking on its
Storage tab.
4 Click the Add… button, choose the iSCSI radio button for Virtual disk
storage, and select
Next .
5 Enter the name for the new SR in the Name field, EqualLogic array group
IP address in the target host field, and 3260 in the
Port field.
6 Click Discover IQNs to perform target discovery. Each volume on an
EqualLogic array has a unique target name with LUN ID set to "0".
7 Select the appropriate IQN and then click Discover LUNs to discover the
LUN associated with the target.
8 Select the LUN and click Finish to create a new SR.