Rear operator panel

The rear operator panel provides informational LED indicators as well as methods to remind and identify resources within your storage unit.

The rear operator panel provides information about the status of the server or expansion enclosure. This panel also provides physical hardware function, such as location and reminder operations. Each enclosure has a single rear operator panel that is located at the top and center of the rear of the enclosure.

The rear operator panel contains the power button, the power on, location, information, and system alert LED indicators. The Remind and Identify function buttons as well as the fault on front resource, fault in external enclosure, and data cache on battery indicators are also located on the rear operator panel. The enclosure identifier indicator, increment button, and the rack identify function connector are located on the right of the rear operator panel. The switches and buttons on the rear operator panel are described in Table 2. Figure 1 shows the location of the indicators described in Table 1.

Figure 1. Rear operator panel indicators

LED indicators on the rear operator panel

Table 1. Indicator states for the rear operator panel
Indicator name (color)	Purpose	State descriptions
Power on (green)	Indicates that power is being delivered to the storage unit.	Solid: The power supply has been activated and is delivering dc output power to the storage unit. Flashing: The power supplies have been deactivated. ac power is present, but dc power output is on standby power only. Off: The storage facility is deactivated, the power supplies are deactivated, and ac power is not present.
System location (blue)	Indicates that the server or expansion enclosure belongs to the specified storage complex.	Solid: The Identify function has been activated and all attached enclosures have illuminated their respective location indicators. Flashing: The Identify function has been activated or deactivated and the attached enclosures are currently turning their respective location indicators on or off. Off: The system is in normal operation and the Identify function has been deactivated.
System information (amber)	Indicates that an event has occurred for a resource in the storage unit. You must view the logs in the DS Storage Manager to obtain further information about the event.	Solid: An informational event has occurred on a resource in the current enclosure or on a resource that is contained within an attached expansion enclosure. Flashing: The system is initializing and is not yet ready to be accessed by either the management console or host systems. Initialization is complete, and the system is ready for I/O, once the flashing amber light is turned off. Off: No events have occurred or are currently open.
System alert (amber)	Indicates that a fault or error has been detected on the storage complex.	Solid: A fault is present within the storage complex, either in the current enclosure or an attached enclosure. Flashing: The Remind function has been activated but the fault or error has not been corrected. Off: The system is in normal operating condition. Faults have been corrected successfully and no other faults exist.
Data cache on battery (green)	Indicates the state of the nonvolatile cache. This indicator is only operational for server enclosures. It is not operational for expansion enclosures.	Solid: There has been an ac power loss. Any modified data that exists is stored in the cache and is being supported by the battery backup unit. Flashing: The charge state of the battery backup unit has changed. Off: ac power is present and there is no modified data in the cache.
Fault on front resource (amber)	Indicates that a fault has occurred on a resource located in the front of the enclosure.	Solid: A fault is present within the enclosure. The fault can be located in the front of the enclosure and can be repaired through the light path. Flashing: The Remind function has been activated but the fault or error has not been corrected. Off: There are no faulty resources located on the front of the enclosure that can be repaired through the light path.
Fault in external enclosure (amber)	Indicates that a fault has occurred on a expansion enclosure that is attached to the server enclosure. This indicator is only operational for server enclosures. It is not operational for expansion enclosures.	Solid: A fault exists within an attached expansion enclosure. Flashing: The Remind function has been activated but the fault or error has not been corrected. Off: There are no faults in any of the attached expansion enclosures that can be repaired through the light path.

Table 2. Rear operator panel switches and buttons
Operator function	Description
Power button	If the storage unit is on standby power, pressing and releasing the power button activates the power-on startup sequence. If the storage unit is in a power-on state, pressing and releasing the power button activates the power-off shutdown sequence. Note: Power-on and power-off operations for expansion enclosures can be managed through the server enclosure.
Remind function button	Pressing and releasing this button changes the system alert or system information indicator from a solid to a flashing state. This transition can occur only when the system alert or system information indicators are in a solid state.
Identify function button	If the system location indicator is off, pressing and releasing this button activates the storage facility identification function. The system location indicator enters a flashing state until all of the system location indicators on the attached expansion enclosures have been illuminated. If the system location indicator is on or flashing, pressing and releasing this button deactivates the storage facility identification function. The system location indicator enters a flashing state or continue flashing until all system location indicators on the attached expansion enclosures have been turned off.
Enclosure identifier indicator (red)	Displays the identification number for the expansion enclosure. The left digit displays the device adapter loop that includes the enclosure. The right digit displays the enclosure fibre-channel arbitrated loop (FC-AL) expansion enclosure address setting. For all enclosures that are contained inside a storage complex, the address setting is accomplished through a programming algorithm and reflected on the LED display. You do not manually set this indicator.
Enclosure address increment button	Press the increment button to set the address for an enclosure.
Rack identify function connector	This connector allows you the capability to connect the enclosure to the external rack identify hardware.