HSG80 Array Controller V8.7 Maintenance and Service Guide
3–5
Replacement Procedures for BA370 Enclosure Elements
Replacement Procedures for Controller and Cache
Modules in a Single-Controller Configuration
This section shows how to replace modules in a single-controller configuration (see
Figure 3–3), to include: replacing both the controller and cache module, replacing
only the controller, and replacing only the cache module. To upgrade a
single-controller configuration to a dual-redundant controller configuration, see
Chapter 5.
Figure 3–3: Single-controller configuration in a BA370 enclosure
CAUTION: In a single-controller configuration, always shut down the subsystem
before removing or replacing any modules. Otherwise, data loss might occur.
For fiber optic cables without extender clips, thin needle-nose pliers must be used to
remove the cable from the controller without potentially damaging the cable (see
Figure 3–4).
1
EMU
2
Controller in
Controller A bay
3
Fiber optic
cable with
extender clip
4
Cache module
in Cache A bay
5
PVA module
CXO7072A
5
2
1
4
3