Lenovo ThinkServer Storage SA120 - Manual (Page 29)

1 SAS-connector-status LEDs
Status Color Description
On Green The SAS connector is in use, but no data is being transferred.
Blinking Green The SAS connector is active and data is being transferred.
On Amber The SAS connector has potential errors.
Off None The SAS connector is not in use or is working normally.
Note: When a SAS-connector-status LED indicates potential errors, check the system-status LEDs on the
server that the storage array is connected to for confirmation.
2 Rear I/O module power-status LED
Status Description
On The rear I/O module is turned on.
Off The rear I/O module is turned off.
3 Rear I/O module status LED
Status Description
On The rear I/O module has potential errors.
Off The rear I/O module is working normally.
4 Debug connector
Use the debug connector to update the firmware of the storage array and diagnose problems. See Chapter 5
“Updating the firmware” on page 29 and “Using the command line interface” on page 59.
5 SAS-out connector
Use the SAS-out connector to connect your storage array to another storage array in cascading mode.
See “Connecting the storage arrays” on page 19.
6 SAS-in connector
Use the SAS-in connector to connect your storage array to a server or another storage array. See
“Connecting the storage arrays” on page 19.
Drive-status LEDs
Each drive has two status LEDs on the front.
Figure 10. Status LEDs on 3.5-inch drives
Chapter 2 . Product overview 17