Hitachi AMS 2100, Service Manual

Page: 73 / 192

Introduction
1–33
Hitachi AMS 2000 Family Storage System Service Guide
Figure 1-29 shows the front of an expansion unit (factory designation
RKAK) with the front bezel removed and the disk drives in the front of the
array exposed.
Figure 1-29: Expansion Unit Front View - Bezel Removed
Expansion unit status LEDs
The upper right edge of the front of the AMS 2100/2300 expansion unit has
four LEDs that indicate the status of the array. Figure 1-30 and Table 1-21
describe the array status LEDs and their functions.
Figure 1-30: Expansion Unit Status LEDs
Table 1-20: Expansion Unit Front View
Item Description Item Description Item Description
1
Disk Drives, showing
the status LEDs
2
Locate LED
Expansion unit
status LEDs on
page 1-33
3
Power LED
NOTE: The status LEDs for the disk drives in the expansion unit are the
same as the disk drive status LEDs the base unit. See Disk drive status
LEDs on page 1-31 .