IBM DCS9550 1S1 Installation & Service Manual page 21

Introduction
Table 1–2
FC Host Port 1
Signal Good
Router Status
ESI/SCM Module
Fault
Figure 1–6
6
SCM I/O Module LEDs
Incoming FC signal is GOOD
No connection or incorrect connection
Invalid SFP connection
Storage Router Device Ready
Storage Router Device not ready or defective
Fault present (also On when booting)
Successful controller initialization
SCM I/O Module
IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation, Service, and User Guide
Green
On
Flashing
Green
On
Amber
Off
Off
Off
On