
HSG80 Array Controller V8.7 Maintenance and Service Guide
3–1
3
Replacement Procedures for BA370
Enclosure Elements
This chapter provides procedures for shutting down and restarting the subsystem and
procedures for replacing the following BA370 enclosure elements:
•
Array controller
•
Cache module
•
ECB
•
PVA module
•
I/O module
•
EMU
Refer to enclosure documentation for information about replacing power supplies,
power cables, AC input boxes, cooling fans, and bus cables.
IMPORTANT: See Chapter 2 to review the list of required tools and the precautions to follow
prior to performing any procedure within this chapter.
Shutting Down the Subsystem
Use the following steps to shut down a BA370 subsystem.
1. Connect a PC or terminal to the maintenance port of one of the controllers in the
subsystem.
2. From a host console, stop all host activity to the controllers and dismount the
logical units in the subsystem.
3. If using a Windows NT or Windows 2000 platform, shut down the server.
4. Shut down the controllers.