Dell Storage Center SCv2000 and SCv2020 Storage System Deployment Guide

The following figure shows the features and indicators on a storage controller with front-end SAS ports.

Figure 1. SCv2000/SCv2020 Storage SystemStorage Controller with Four 12 Gb Front-End SAS Ports

Item	Control/Feature	Icon	Description
1	Battery status indicator		Blinking green (on 0.5 sec. / off 1.5 sec.): Battery heartbeat Fast blinking green (on 0.5 sec. / off 0.5 sec.): Battery is charging Steady green: Battery is ready
2	Battery fault indicator		Off: No faults Blinking amber: Correctable fault detected Steady amber: Uncorrectable fault detected; replace battery
3	MGMT port (Slot 3/Port 1)	—	Ethernet/iSCSI port that is typically used for storage system management and access to the BMC NOTE: To use the MGMT port as an iSCSI port for replication to another Storage Center, a Flex Port license and replication license are required. To use the MGMT port as a front-end connection to host servers, a Flex Port license is required.
4	REPL port (Slot 3/Port 2)	—	Ethernet/iSCSI port that is typically used for replication to another Storage Center NOTE: To use the RELP port as a front-end connection to host servers, a Flex Port license is required.
5	SAS activity indicators	—	There are four SAS PHYs per SAS port. Off: SAS PHY is not connected Steady green: SAS PHY is connected, but not active Blinking green: SAS PHY is not connected nor active
6	Storage controller module status		On: Storage controller completed POST
7	Recessed power off button		Not currently used
8	Storage controller module fault		Off: No faults Steady amber: Firmware has detected an error Blinking amber: Storage controller is performing POST
9	Recessed reset button		Not currently used
10	Identification LED		Off: Identification disabled Blinking blue (for 15 sec.): Identification is enabled Blinking blue (continuously): Storage controller shut down to the Advanced Configuration and Power Interface (ACPI) S5 state
11	USB port		One USB 3.0 connector
12	Diagnostic LEDs (8)	—	Green LEDs 0–3: Low byte hex POST code Green LEDs 4–7: High byte hex POST code
13	Serial port (3.5 mm mini jack)		Not for customer use
14	Four Mini-SAS High Density (HD) ports (Slot 1/Port 1, Slot 1/Port 2, Slot 1/Port 3, and Slot 1/Port 4)	—	Front-end connectivity ports NOTE: The mini-SAS HD ports are for front-end connectivity only and cannot be used for back-end expansion.
15	Mini-SAS port B (Slot 2/Port 2)		Back-end expansion port B
16	Mini-SAS port A (Slot 2/Port 1)		Back-end expansion port A