SC180 Expansion Enclosure Features and Indicators

Table of content

1. Front-Panel Features and Indicators
2. Back-Panel Features and Indicators
3. EMM Features and Indicators
4. Fan Module Features and Indicators
5. PSU Features and Indicators

Front-Panel Features and Indicators

The SC180 front panel shows the expansion enclosure and power status.

Figure 1: SC180 Front-Panel Features and Indicators

 

Item	Name	Panel	Description
1	Drawer specific anti-tamper locks		Locks the drawer shut using a Torx T20 screwdriver until the red arrows point to the locked icon (away from the center of the chassis).
2	Drawer specific left and right side status indicators		Sideplane OK/Power Good: Off - Sideplane card or cable fault Green - Sideplane card and cable are functional (though a fault may be indicated by one or more of the following LEDs) Drawer Fault: Amber - Sideplane card fault or drive failure causing loss of availability or redundancy Logical Fault: Amber (steady) - Host indicated drive fault Amber (flashing) - Arrays in impacted state Cable Fault: Amber - Cable fault
3	Drawer specific left and right side expansion enclosure activity indicators		Activity Bar Graph: Six variable-intensity LEDs dynamically displaying access of the drives in that specific drawer.
4	Status indicator for expansion enclosure		Unit ID Display: A numerical display whose primary function is to display the unit identification number. Input Switch: Not currently used (though it can be used to set the Unit ID Display, the ID will be automatically reset by the Storage Center Operating System) Power On/Standby: Off - The expansion enclosure does not have power Green - The expansion enclosure is on (operational) Amber - The expansionis in standby (not operational)
			Module Fault: Amber when there is a hardware fault (additionally, an LED may be lit on a PSU, drawer, DDIC, fan module, or IO module indicating the part at fault)
			Logical Status: Amber when there is a change of status or fault from something other than the expansion enclosure itself (this may be from an external RAID controller or HBA, but is usually associated with a disk drive as indicated by its own fault LED)
			Drawer 1 Fault: Amber when a drive, cable, or sideplane fault has occurred in drawer 1
			Drawer 2 Fault: Amber when a drive, cable, or sideplane fault has occurred in drawer 2

 

 

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Back-Panel Features and Indicators

The SC180 back panel shows power, connectivity, and fault indicators.

Figure 2: SC180 Back-Panel Features and Indicators
 

Item	Name	Icon	Description
1	Optional cable retention positions (4)	-	Locations for optional cable retention brackets.
2	Expansion Enclosure Modules (2)	-	Each EMM contains SAS ports and status indicators.
3	Cooling fans (5)	-	Fans that provide cooling for the expansion enclosure.
4	Power supply units (2)	-	2.8 kW power supply that provides power for the expansion enclosure.
5	Optional cable retention positions (4)	-	Locations for optional cable retention brackets.
6	Power switch (2)	-	Controls power for the expansion enclosure. There is one switch for each power supply.

 

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EMM Features and Indicators

An SC180 expansion enclosure includes two Enclosure Management Modules (EMMs) in two Storage Bridge Bay (SBB) interface slots.

Figure 3: SC180 EMM Features and Indicators
 

Item	Name	Icon	Description
1	Fault LED		Off - Module OK Amber - Module fault
2	Power LED		Green (steady) - Module OK Green (flashing) - Vital product data (VPD) fault Off: Module fault
3	Console port	-	Not for customer use.
4	SAS ports	-	Connect to the storage system
5	SAS port link status indicators	-	Green (steady) - Connected, but no activity Green (flashing) - Connected plus activity Off - Not connected

Fan Module Features and Indicators

SC180 expansion enclosures include five fan modules in five interface slots.

Figure 4: SC180 Fan Module Features and Indicators
 

Item	Name	Icon	Description
1	Release latch	-	Press the release latch to remove the fan module.
2	Module OK		Green - Module OK
3	Fan fault		Amber - Loss of communication with the fan module, or reported fan speed is out of tolerance

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PSU Features and Indicators

SC180 expansion enclosures include two Power Supply Units (PSUs) in two interface slots.

Figure 5: SC180 PSU Features and Indicators

 

Item	Name	Icon	Description
1	Release latch	-	Press the release latch to remove the PSU.
2	PSU fault		Amber (steady) - PSU fault, PSU not supplying power Amber (flashing) - PSU firmware is downloading
3	AC fault		Amber (steady) - AC power is not detected Amber (flashing) - PSU firmware is downloading
4	Power OK		Green (steady) - This PSU is providing power Green (flashing) - AC power is present, but this PSU is in standby mode (the other PSU is providing power)
5	Power outlet	-	Power outlet for the expansion enclosure.
6	Power switch	-	Controls power for the expansion enclosure.

Separate and unique conditions are indicated if all three LEDs are in the same state:

• If all three LEDs are off, then there is no AC power to either PSU.
• If all three LEDs are on, then the General Enclosure Management (GEM) software has lost communication with the PSU.

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