1

Unit identification

(ID) display

A numerical display that helps when setting up and maintaining multiple storage shelves. The Primary shelf has a default value of 00. The first Expansion shelf has a value of 01. Subsequent Expansion shelves have a value of 02 and 03.

2

Input switch

Used to set the unit identification display.

3

Power LED

Amber when the system is in standby mode.

Green when the system is on.

4

Module fault LED

Amber when there is a system hardware fault.

An LED may be lit on a power supply, drawer, disk carrier, cooling module, or I/O module to identify which component is at fault.

5

Logical status LED

Shows a change of status or a fault. Typically these changes of status or faults are associated with the shelf's disk drives. However, the Logical Status LED can also indicate an issue with an internal RAID controller or external RAID controller, or with a host bus adapter.

6

Drawer 1 fault LED

Indicates a drive, cable, or sideplane fault in Drawer 1, the top drawer.

7

Drawer 2 fault LED

Indicates a drive, cable, or sideplane fault in Drawer 2, the bottom drawer.