Host Iscsi Configurations; Example Of A Single-Host, Multiple-Port Configuration - IBM DS5100 Installation, User's, And Maintenance Manual

Host iSCSI configurations

This section provides the following examples of DS5100 and DS5300 host iSCSI
configurations:
v Single-host, multiple-port configuration, as shown in Figure 83
v Multiple-host, multiple-port configuration, as shown in Figure 84 on page 120
v iSCSI and Fibre Channel hosts, multiple-port configuration, as shown in
v Example of an incorrect configuration: Single-host, iSCSI and Fibre Channel, as
v Multiple-host, multiple-port, multiple-switch configuration, as shown in Figure 87
Notes:
1. The DS5100 and DS5300 does not support direct connections from the host
2. The DS5100 and DS5300 does not support connections to both iSCSI and Fibre
3. The following illustrations do not accurately represent the controller locations or
Figure 83 shows an example of a multiple port, single-host configuration. A system
that uses multiple iSCSI ports can provide enhanced performance compared to a
single-port iSCSI connection.
Ethernet
Figure 83. Example of a single-host, multiple-port configuration
Figure 84 on page 120 shows a multiple-host, multiple-port configuration. For
cluster configurations, the following illustration is an example of a multiple-host,
multiple-port, and redundant path and controller configuration. You can replace the
two gigabit Ethernet switches in the illustration with one large gigabit Ethernet
switch that has the required number of ports. Virtual local area network (VLAN) can
also be used to isolate the two iSCSI networks, instead of a single switch.
Figure 85 on page 120
shown in Figure 86 on page 121
on page 122
systems to the iSCSI ports on the storage subsystem.
Channel ports from the same host system.
port locations in the DS5100 and DS5300. The illustrations are for illustration
purposes only.
Host system
with two iSCSI
connectors
Gigabit
switch
DS5100 and
DS5300
Chapter 3. Cabling the storage subsystem
119