Element

Description

Disk Tray 1-4

Four disk trays for installing hard drives.

Tray Open Button

Each disk tray has a Tray Open Button, which serves the following purposes:

• Indicates whether the disk tray is locked. When the button's groove is horizontal, the disk tray is locked. When it is vertical, the disk tray is open.
• Enables you to lock/unlock the disk tray, by using a flat-head screwdriver to turn the button until its groove is horizontal/vertical.
• Enables you to open the disk tray. Upon pressing the button, the outer panel of the disk tray (visible in the preceding diagram) becomes a lever that can be used to pull the disk tray out of the appliance.

HDD Status Indicators

Each disk tray has two LEDs that indicate its status:

LED

State

Explanation

Upper LED

Blinking (Blue)

Disk activity

Lower LED

On (Green)

OK

On (Red)

Disk failure

Blinking (Red)

RAID array failure

POWER

A LED indicating whether the appliance is operational:

State

Explanation

On (Green)

The appliance is on.

Off

The appliance is off.