IBM DS4700 Installation, User's, And Maintenance Manual page 135

You can either use the default controller Ethernet IP addresses for out-of-band
connection or change the default controller Ethernet IP addresses by using
Dynamic Host Configuration Protocol (DHCP) or Storage Manager client. Refer to
the DS4000 Storage Manager Installation, User's and Maintenance Guide for the
appropriate operating system for more information on setting the management
connections and installing the DS4000 storage subsystem management software.
For a listing of default IP addresses, see "Connectors, switch, and enclosure ID" on
page 8.
Note: Do not connect the storage subsystem Ethernet ports to a public network or
public subnet. It is strongly recommended that you create a private network
between the storage subsystem and the management station.
Chapter 3. Cabling the storage subsystem
103