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3. Because the XIV system acts as a TCP server for iSCSI connections, packets are
4. If present, Ethernet VLANs and IP routers must be configured to enable
5. If present, IP routers must be configured to enable access between the hosts
Important: Link aggregation is not supported. Ports cannot be bonded.
For supported interoperability configurations, see the System Storage
Interoperation Center website (www.ibm.com/systems/support/storage/config/
ssic).
Redundant configuration
In this configuration, each interface module is connected through two ports to two
different Gigabit Ethernet switches, and each host system is connected to the two
Gigabit Ethernet switches. Full connectivity is maintained in the event of a
component failure.
This configuration is the same as the redundant configuration options for Fibre
Channel networks.
For the best performance, use a dedicated iSCSI network infrastructure.
Single-switch configuration
In this configuration, a single Gigabit Ethernet switch interconnects all host
systems and interface modules.
Use non-redundant configurations only when the risks of a single point of failure
are acceptable, which is typically the case for test and development environments.
Single-port host configuration
In this configuration, a single Gigabit Ethernet switch connects to each host system
and to two interface modules.
Use non-redundant configurations only when the risks of a single point of failure
are acceptable, which is typically the case for test and development environments.
Network cable requirements
The customer is responsible for supplying cables that connect to the patch panel,
including host attachment (Fibre Channel or iSCSI) cables, management cables,
maintenance cables, and virtual private network (VPN) cables.
always routed through the Ethernet port from which the iSCSI connection was
initiated. The default gateways are required only if the hosts are not on the
same layer-2 subnet as the XIV system.
connectivity between the host systems and the XIV system.
and the XIV system.
Table 35. Required cable types
Cables
Fibre Channel
Required cable type
50 µm (micrometer) multimode Fibre Channel cables with
LC/LC or LC/SC connectors
Note: If you require 62.5-µm fibers, contact an IBM service
representative for assistance.
Chapter 7. Network and host connectivity requirements
59
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