HPP Enterprises P4000 SAN - Manual (Page 9)

9
Configuring an iSCSI volume
The XenServer SR stores VM data on a volume (iSCSI Target) that is a logical entity with specific
attributes. The volume consists of storage on one or more storage nodes.
When planning storage for your VMs, you should consider the following:
 How will that storage be used?
 What are the storage requirements at the OS and application levels?
 How would data growth impact capacity and data availability?
 Which XenServer host – or, in a resource pool, hosts – require access to the data?
 How does your DR approach affect the data?
Example
An HP StorageWorks P4000 SAN is configured using the Centralized Management Console (CMC).
In this example, the HP-Boulder management group defines a single storage site for a XenServer host
resource pool (farm) or a synchronously-replicated stretch resource pool. HP-Boulder can be thought
of as a logical grouping of resources.
A cluster named IT-DataCenter contains two storage nodes, v8.1-01 and v8.1-02.
20 volumes have currently been created. This example focuses on volume XPSP2-01, which is sized at
10GB; however, because it has been thinly provisioned, this volume occupies far less space on the
SAN. Its iSCSI qualified name (IQN) is iqn.2003-10.com.lefthandnetworks:hp-boulder:55:xpsp2-01,
which uniquely identifies this volume in the SR.
Figure 2 shows how the CMC can be used to obtain detailed information about a particular storage
volume.