Hitachi AMS 2100, Service Manual

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Introduction
1–21
Hitachi AMS 2000 Family Storage System Service Guide
Expansion unit switches
There are no switches on the expansion unit or high-density expansion unit.
Battery expansion unit switches
There are no switches on the battery expansion unit.
Connectors and LEDs
This section illustrates and describes the locations and functions of the
connectors and LEDs on the base and expansion units.
Base unit
Front panel status LEDs
The upper right edge of the front of the AMS 2100/2300 base unit has four
LEDs that indicate the status of the array. Also built into the chassis are two
status LEDs for each disk drive. In addition, the Cache Backup battery has
two status LEDS. Figure 1-20 and Table 1-11 describe the front panel status
LEDs and their functions.
Figure 1-20: Base Unit Status LEDs (front panel)
Table 1-11: Base Unit Status LEDs (front panel)
Item
Name/
Color
Status Description
Base Unit Overall Status LEDs
1
Alarm
RED
The Alarm LED shows when an AMS 2100/2300 array has encountered a
serious error.
OFF
Normal operation
ON
A serious error has occurred in the array. Please contact
Hitachi Data Systems Technical Support. See the Getting
Help section in the Preface of t his manual.
Slow Blink
(1 blink/sec)
A serious failure has occurred. Please contact Hitachi Data
Systems Technical Support. See the Getting Help section in
the Preface of t his manual.