Iscsi Configurations; Ds5020 Host Iscsi Configurations - IBM System Storage DS5020 Installation, User's, And Maintenance Manual

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Figure 60. Example of a two-cluster configuration

iSCSI configurations

The DS5020 storage subsystem supports 1 Gbps iSCSI connectivity. You must
determine how the host systems will connect to the storage subsystem. The
illustrations in the following sections show common iSCSI host system
configurations.
The iSCSI ports support IPv4 and IPv6 TCP/IP addresses, CHAP, and iSNS. Use
either Cat5E or Cat6 Ethernet cable types for iSCSI port connections. A Cat6
Ethernet cable provides optimal performance.
Note: The minimum DS5020 configuration is two partitions. The maximum is 128

DS5020 host iSCSI configurations

This section provides the following examples of DS5020 host iSCSI configurations:
v Single-host, multiple-port configuration, as shown in Figure 61 on page 91
v Multiple-host, multiple-port configuration, as shown in Figure 62 on page 91
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 65
Notes:
1. The DS5020 does not support direct connections from the host systems to the
2. The DS5020 does not support connections to both iSCSI and Fibre Channel
90
IBM System Storage DS5020 Storage Subsystem: Installation, User's, and Maintenance Guide
Cluster 1
Host system
with two host
adapters
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partitions. Configuration upgrades are available as upgrade options. Contact
your IBM reseller or marketing representative for more information.
Figure 63 on page 92
shown in Figure 64 on page 93
on page 94
iSCSI ports on the storage subsystem.
ports from the same host system.
Host system Host system
with two host
with two host
adapters
adapters
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DS5020
Cluster 2
Host system
with two host
adapters
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