Front Panel of a JA2500 Appliance

The front panel of the JA2500 Junos Space Appliance, shown in Figure 1, consists of the components listed in Table 1.

Figure 1: JA2500 Appliance Front Panel

Table 1: JA2500 Appliance Front Panel Components
Component	Description
Hard drives	The JA2500 appliance has six hot-swappable 1-TB hard disk drives in a RAID 10 configuration. The hard drives are numbered (0 through 5) as follows: Slot 3 (top left) and Slot 0 (bottom left) Slot 4 (top middle) and Slot 1 (bottom middle) Slot 5 (top right) and Slot 2 (bottom right)
I/O card (IOC) expansion slots	IOC expansion is currently not supported.
Network ports	Four RJ-45 Ethernet 10/100/1000 ports, labeled 0 through 3 from left to right
USB port	One USB port
Console port	One RJ-45 console port
Chassis LEDs	The following chassis LEDs, located next to the console port, are present on the appliance: Hardware Fault LED (red), which indicates that a fan, power supply, or temperature alarm has occurred. Hard Disk Activity LED (yellow), which indicates that the hard disk is in use. Power LED (green), which indicates that the appliance is powered on.
Ethernet (LAN) port LEDs	The following LEDs are present above each Ethernet port: Link/Activity LED (green), which indicates the link (On) or link activity (Blinking) Speed LED, which indicates the link speed: Off—10 Mbps Green—100 Mbps Yellow–1000 Mbps or 1 Gbps
Hard drive LEDs	In addition to the LEDs on the appliance chassis, there are two LEDs on each hard disk: Hard Disk Activity LED (green), which indicates disk activity Hard Disk Failure LED (red), which indicates disk failure (On) or disk rebuilding (Blinking)