1.2 Exterior Features, Controls, and Indicators

This section describes the features, controls and indicators on the front and back panels of the J4500 array.

1.2.1 Front Panel

Sun Storage J4500 Array Front Panel shows the front panel. Front Panel Controls and Indicators shows a close up of the front panel controls and indicators. Front Panel Controls and Indicators lists and describes the front panel controls and indicators.

Figure 1-1 Sun Storage J4500 Array Front Panel

image:This graphic shows the front panel of the Sun Storage J4500 Array.

Figure Legend

1 USB ports—Not used

2 Serial numbers on ledge

Figure 1-2 Front Panel Controls and Indicators

image:This graphic shows the front panel controls for the Sun Storage J4500 Array.

Table 1-2 Front Panel Controls and Indicators

#	Name	Description
1	Locate button/LED	Using array management software, operators can turn this LED on remotely to help them to locate the server in a crowded server room. Press to turn off.
2	System fault	On – Service action is required.
3	Power LED	On – Power is on. Blinking – Standby power is on but main power is off. Off – Power is off.
4	System power button	See 2.2 Powering On and Off the Array for details.
5	Top fault LED	On – Hard disk or fan fault.
6	Rear fault LED	On – Power supply, or system controller fault (service is required).
7	Over temperature LED	On – The enclosure has exceeded the operating temperature.

1.2.2 Back Panel

Sun Storage J4500 Array Back Panel shows the features of the back panel. Back Panel Features lists and describes each feature.

Figure 1-3 Sun Storage J4500 Array Back Panel

image:This graphic shows the back panel components of the Sun Storage J4500 Array.

Table 1-3 Back Panel Features

#	Name	Description
1	Power supply fault LED (amber)	On – Service action is required.
2	Power supply LED (green)	On – Power is on (AC/DC are OK). Blinking – Standby power is on (AC is OK). Off – Power is off.
3	AC power connector	Each power supply has its own AC connector with a clip to secure its power cable.
4	Chassis ground	Connect grounding straps here.
5	Filler panel	This filler panel seals an access area in the chassis used by service personnel.
6	Locate button/LED (white)	Using array management software, operators can turn this LED on remotely to help them to locate the enclosure in a crowded server room. Press to turn off.
7	System fault LED (amber)	On – Service action is required.
8	System power LED (green)	On – Power is on. Blinking – Standby power is on but main power is off. Off – Power is off.
9	SAS link activity LED (green)	Each SAS port has a SAS Link Activity LED: On – 1 to 4 links are ready. Blinking – Read/Write port activity. Off – Link is lost.
10	Two mini-SAS x4 connector ports (SAS B)	Secondary (redundant) SAS ports 0 and 1, each with SAS Link activity LEDs. Port 0 uses subtractive or direct routing and connects to a host or upstream devices; Port 1 is universal, using table and direct routing, and connects to a host or downstream devices.
11	SAS ID (or WWN)	The label placed here lists the unique SAS ID address (also known as World-Wide Name) of the enclosure.
12	Two mini-SAS x4 connector ports (SAS A)	Primary SAS ports 0 and 1, each with SAS Link activity LEDs. Port 0 uses subtractive or direct routing and connects to a host or upstream devices; Port 1 is universal, using table and direct routing, and connects to a host or downstream devices.
13	Enclosure reset button	Resets the enclosure hardware without powering down the enclosure. For more information, see Chapter 4, Troubleshooting.
14	System controller status LEDs	Blue – Ready to remove (service action allowed) Amber – Fault (Service action required) Green – OK (no action required)

1.2.3 Sun Storage J4500 Array Internal Components

Internal Components shows the locations of the J4500 array components, with the covers removed. All power supplies, drives and fans are numbered and labeled.

Figure 1-4 Internal Components

image:This graphic shows and lists the internal components of the Sun Storage J4500 Array.

Figure Legend

1 Power supplies (two: PS0 and PS1)

2 System Controller (SC) board (beneath power supplies)

3 Hard Disk Drives (48)

4 Fans (5 trays with two fans each)

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	Sun Storage J4500 Array Service Manual