
3-4
AS1021M-UR+ User's Manual
should be notifi ed by your system management software. Please refer to Chapter
6 for instructions on replacing failed SATA drives.
Each SAS drive carrier has two LEDs.
Green:
When illuminated, the green LED on the front of the SAS drive car-
rier indicates drive activity. A connection to the SAS backplane enables this LED
to blink on and off when that particular drive is being accessed.
Red:
The 1021M-UR+ features a SES2 compliant backplane that activates
the red LEDs, which indicate a drive failure. Please refer to Chapter 6 for instruc-
tions on replacing failed SAS drives.
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