Item Control/Feature Icon Description
• Blinking amber and yellow: Beacon
• All blinking (simultaneous): Firmware initialized
• All blinking (alternating): Firmware fault
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
SC4020 Storage System Storage Controller with iSCSI Front-End Ports
The following figure shows the features and indicators on a storage controller with iSCSI front-end ports.
Figure 11. SC4020 Storage System Storage Controller with Two 10 GbE iSCSI Front-End 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: The MGMT port can be used as an iSCSI port for
replication to another Storage Center or as a front-end
iSCSI port for connections to host servers.
4 REPL port (Slot 3/Port 2) — Ethernet/iSCSI port that is typically used for replication to
another Storage Center
NOTE: The REPL port can be used as a front-end iSCSI port
for connections to host servers.
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
About the SC4020 Storage System
21
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