IBM DS4700 manual Connecting secondary interface cables

Connecting secondary interface cables

This section is applicable to (direct) out-of-band management configurations only. If your configuration uses host-agent (in-band) management, skip this section.

Use the Ethernet interface ports on the back of the storage subsystem to connect the controllers for direct management of the storage subsystems (see “Direct (out-of-band) management method” on page 102).

Important:

1.The serial interface ports are intended to be used by service technicians to perform diagnostic operations on the storage subsystem. Incorrect use of the serial port can result in loss of data access and, in some cases, in loss of data. Do not make connections to the serial port unless you do so under the direct supervision and guidance of IBM support personnel. The serial port connection requires a special PS2 DIN to DB9 male converter. (IBM Service and support personnel, see Serial cable adapter (RoHS) in “Parts listing” on page 188 for FRU P/N.)

2.To minimize security risks, do not connect the DS4700 Express in a public LAN or public subnet. Use a local private network for the DS4700 Express and the management station Ethernet ports.

3.To ensure proper EMI shielding, always use quality braided and shielded serial cables.

Connect a pair of Ethernet cables from the storage-management station to the Ethernet ports for controller A (located on the top) and controller B (located on the bottom) on the back of the storage subsystem. Figure 79 shows the location of the ports on the DS4700 Express Storage Subsystem model 70, and Figure 80 on page 101 shows the location of the ports on the DS4700 Express Storage Subsystem model 72. Only one Ethernet port connection from each controller is required to establish a direct (out-of-band) management connection to the DS4700 Express Storage Subsystem.

Note: The alignment of the Ethernet and serial ports on controller A are opposite those of controller B. Before inserting an Ethernet or serial cable, verify that the cable connection is rotated correctly to match the alignment of the port on the RAID controller. Do not force-fit.

21

1 2

Figure 79. Ethernet and serial port locations on DS4700 Express model 70

100IBM System Storage DS4700 Express Storage Subsystem: Installation, User’s and Maintenance Guide