Dell SC4020 Getting Started page 12

Back-Panel Connectors (per Storage Controller Module)
Fibre Channel connectors
iSCSI connectors
SAS connectors
USB Connector
LED Indicators
Front panel
Hard-drive carrier
Storage Controller Module
8 Getting Started With Your System
Connection to the Fiber Channel Network
Connection to iSCSI devices
NOTE:
Used for replication to another
Storage Center only
6 Gbps SAS A and B connectors for
expansion to additional enclosures
NOTE:
SAS connectors are
SFF-8086/SFF-8088 compliant
One USB 3.0 connector
NOTE:
For engineering use only
• One two color LED indicator for system
status
• One single color LED indicator for power
status
• Two digit, seven-segment display
indicating enclosure ID number
• ID button with a single color LED
indicating startup and pressed states
• One single-color activity LED
• One single-color LED status indicator
per drive
• Two single-color LEDs per Ethernet Port
indicating activity and link speed
• Four dual-color LEDs per SAS Connector
indicating port activity and status
• One single-color LED indicating status
• One single-color LED indicating fault
• One single-color LED for identification
• Eight single-color LED for diagnostics