Setup Guide

38 Configuring Storage
• Up to Four Hosts with a Non-redundant Data Path — This configuration
contains up to four XenServer hosts, each with one SAS 5/E card, and a
PowerVault MD3000 RAID enclosure with two RAID controllers. Each of
the four ports of the PowerVault MD3000's RAID controllers are connected
to one port of each host's SAS 5/E card. Two optional PowerVault MD1000
storage enclosures can be daisy-chained to the PowerVault MD3000 RAID
enclosure to provide additional storage capacity.
In this configuration, hosts connected to same controller can be made part
of a XenServer pool. As shown in Figure 5-8,
XenServer 1 and XenServer 2
can be part of a single pool, sharing LUNs controlled by PowerVault
MD3000 controller 1. Similarly
XenServer 3 and XenServer 4 can be part
of another pool sharing LUNs controlled by PowerVault MD3000
controller 0. If a path of controller fails, no failover is available in the
configuration.
Figure 5-8. PowerVault MD3000 RAID Enclosure – Up to Four Hosts With a
Non-redundant Data Path
LAN
XenServer 1 and 2 XenServer 3 and 4
SAS 5/E SAS 5/E SAS 5/E SAS 5/E
Controller 1
Ports 1 and 0
Controller 0
Ports 1 and 0
PowerVault MD1000
(optional) storage
array
PowerVault MD1000
(optional) storage
array
PowerVault MD3000