Disk Drive Configurations; Disk Drive Status Leds - Hitachi AMS 2100 Hardware Manual

Disk drive configurations

As shown in
in drive section of the unit. Each slot can accommodate one SATA drive or
one drive filler. A drive filler is a solid but lightweight box that fills the slot
to maintain airflow within the high-density expansion unit if 48 drives are
not installed.
The following requirements for the high-density expansion unit apply
whether it is connected to an AMS 2100 or to an AMS 2300.
• All disk drives in this unit must be SATA drives.
• The Hitachi Data Systems minimum supported number of drives that
must be installed in the high-density expansion unit is two in Unit A
(slots 0-1) and two in Unit B (slots 0-1).
• After the minimum configuration is met, you can add up to two SATA
drives in each unit (which makes a RAID1 configuration) at a time, or
other combinations of drives as required to meet the RAID configurations
specified in Chapter 1.

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
Item

With the drive cover removed, the drives and any lighted alarm LEDs are
visible, as shown in
Figure 4-35, a high-density expansion unit has 48 drive slots
Figure 4-36, indicates the drive has failed.
Figure 4-36: Disk Drive Alarm LED
Table 4-36: Disk Drive Alarm LED
Alarm LED (red)
Lights when the drive has a serious error.
Figure 4-37.
Hardware components
Hitachi AMS 2100/2300 Storage System Hardware Guide
Description
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