Install Guide

16 Citrix XenServer with Dell SC Series Storage Configuration and Deployment | 3132-CD-V
Open-iSCSI: dual subnets and MPIO
4.2.1 XenServer Open-iSCSI initiator configuration
The XenCenter management GUI or the XE CLI can be used to configure dedicated NICs for iSCSI storage
traffic use. Assigning a NIC for iSCSI use will prevent the use of the NIC for other functions such as host
management. However, appropriate network configuration is also required to ensure the NIC is used for the
desired traffic. For example, to dedicate a NIC to iSCSI storage traffic, the NIC, storage target, switch, and
VLAN (if a VLAN is used) must be configured so the iSCSI storage target is only accessible over the assigned
NIC.
Ensure that the dedicated NICs used for iSCSI storage use a separate IP subnet that is not routable from the
XenServer management interface. Enforcing this ensures storage traffic will not be directed over the
management interface after a host reboot, which would otherwise be possible due to the initialization of the
network interfaces.