Component identification  91 
•  LFF device bay numbering 
 
 
SAS and SATA hard drive LEDs 
 
  
Item  Description 
1 
Fault/UID LED (amber/blue) 
2 
Online LED (green) 
  
 
SAS and SATA hard drive LED combinations 
  
Online/activity 
LED (green) 
Fault/UID LED 
(amber/blue) 
Interpretation 
On, off, or flashing 
Alternating amber 
and blue 
The drive has failed, or a predictive failure alert has been received 
for this drive; it also has been selected by a management 
application. 
On, off, or flashing 
Steadily blue  The drive is operating normally, and it has been selected by a 
management application. 
On 
Amber, flashing 
regularly (1 Hz) 
A predictive failure alert has been received for this drive. 
Replace the drive as soon as possible. 
On 
Off  The drive is online, but it is not active currently.