Technical data

2–47
Compaq HSZ80 Array Controller ACS Version 8.3 Maintenance and Service Guide
Figure 2–7. I/O Module Locations
NOTE: The controller can function with one failed I/O module.
1. Connect a PC or terminal to the controller’s maintenance port.
2. In a dual-redundant controller configuration, disable failover with the following
command:
SET NOFAILOVER
3. Start FRUTIL with the following command:
RUN FRUTIL
FRUTIL displays the following:
Do you intend to replace this controller’s cache battery? Y/N
4. Enter N(o). FRUTIL displays the FRUTIL Main menu:
FRUTIL Main Menu:
1. Replace or remove a controller or cache module
2. Install a controller or cache module
3. Replace a PVA module
4. Replace an I/O module
5. Exit
Enter choice: 1, 2, 3, 4, or 5 ->
NOTE: The HSZ80 controller supports up to three enclosures. The I/O Module
status can show the following states: Single Ended – OK, Differential – OK,
Termination only – OK, Missing or bad, Unknown or bad, or N/A (cabinet is not
present).
CXO5819A
642
531