Example Of Two Storage Subsystems In A Dual Fibre Channel San Environment - IBM DS3500 Installation, User's, And Maintenance Manual

Fibre
Channel
switch
Figure 63. Example of two storage subsystems in a dual Fibre Channel SAN environment
Connecting iSCSI hosts to the DS3500
The DS3500 can support up to 64 hosts, depending on the number of host ports
and host partitions that are used on the controller. To protect against the loss of
any one path from the host servers to the storage subsystem, use redundant host
connections.
To connect a hardware or software iSCSI initiator to the storage subsystem,
complete the following steps:
1. Connect Ethernet cables from the controller host port to the 1 gigabit or 10
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IBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide
Host system Host system
with two host with two host
adapters
DS3500
gigabit Ethernet switch:
v For a 1 gigabit Ethernet switch, connect a Category 5e or Category 6 Ethernet
cable from the controller host port to a gigabit Ethernet switch, and then
connect an Ethernet cable from the switch to the host iSCSI initiator port.
v For a 10 gigabit Ethernet switch, connect a Category 6 (shielded or
unshielded), Category 6A (shielded or unshielded), or Category 7 Ethernet
cable from the controller host port to a gigabit Ethernet switch, and then
connect an Ethernet cable from the switch to the host iSCSI initiator port. For
these cables, the following cable lengths are supported:
– Cat 6 unshielded - 30m
– Cat 6 shielded - 100m
– Cat 6A unshielded - 55m
– Cat 6A shielded - 100m
– Cat 7 - 100m
Note: These cables must be customer-supplied and are not available with the
DS3500. IBM recommends using Category 6A or Category 7 cables to obtain
the highest signal quality and reliability when operating at 10 Gbps, because
these cables are designed to support 10 Gbps and minimize alien crosstalk.
adapters
Fibre
Channel
switch
DS3500