Disk Drive Status Leds; Battery Expansion Unit Leds And Controls - Hitachi AMS 2000 Series Service Manual

Item
1
Power Supply Area
2

Disk drive status LEDs

Each disk drive in the high-density expansion unit has an ALM (alarm) LED
on the top edge of the drive that shows the status of the disk drive. This
LED, shown in
•
•
Figure 1-39: Disk Drive Alarm LED on High-Density Expansion Unit
Item
1
With the drive cover removed, the drives and any lighted alarm LEDs are
visible, as shown in

Battery expansion unit LEDs and controls

The AMS 2500 can connect to one or two AMS 2000 Battery Expansion Units
to extend the life of the data in the cache in case the power to the facility
where the unit is installed fails for an extended period.
1–40
Table 1-28: High-density Expansion Unit Top View
Description
Unit (four required)
Figure 1-39, indicates that the drive has failed.
Table 1-29: Disk Drive Alarm LED
Alarm LED ((RED)
Lights when the drive has a serious error.
Figure 1-40.
Figure 1-40: Alarm LED Locations
Introduction
Hitachi AMS 2000 Family Storage System Service Guide
Item Description
Disk Drive Filler (must be in all slots
3
that do not have disk drives
installed.)
Disk Drive. See Disk Drive Status
4
LEDs following this table.
Description