IBM 7131-105 User Manual page 93

5.2.3.3 Connecting Two 7131 Storage Towers to One System
Use the following procedure to Connect two 7131 Storage Towers to one system (Figure 5-13).
Note: This configuration requires an SE/DIFF card and a terminator for the second 7131 Storage Tower.
Figure 5-13. Two 7131 Storage Towers Connected to One System
1. DANGER
+--------------------------------------------------------------------+
¦ To prevent a possible electrical shock during an electrical storm, ¦
¦ do not connect or disconnect cables or station protectors for
¦ communications lines, display stations, printers, or telephones.
¦ (RSFTD003)
+--------------------------------------------------------------------+
2. DANGER
+--------------------------------------------------------------------+
¦ To prevent a possible electrical shock from touching two surfaces
¦ with different electrical grounds, use one hand, when possible, to ¦
¦ connect or disconnect signal cables.
+--------------------------------------------------------------------+
3. If you link two 7131 Storage Towers in a one system configuration, you can install a total of 12 devices (6 devices in each 7131 Storage
Tower).
4. Use device addresses 0 to 5 on the first 7131 Storage Tower; do not use device address 6 (see Figure 5-2 in topic 5.2.1).
5. Use device addresses 8 to 13 on the second 7131 Storage Tower; do not use device address 14 (see Figure 5-2 in topic 5.2.1).
6. Set the address on the SE/DIFF card in the second 7131 Storage Tower; see Figure 5-14.
7131-105 User's Guide
Connecting Two 7131 Storage Towers to One System
(RSFTD004)
¦ Copyright IBM Corp. 1995, 1996
5.2.3.3 - 1
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