Dell POWEREDGE R610 - Manual (Page 18)

18 About Your System
Drive-Status Indicator Pattern
(RAID Only) Description
Blinks green two times per
second
Identify drive/preparing for removal
Off Drive ready for insertion or removal
NOTE: The drive status indicator remains off until all
hard drives are initialized after system power is
applied. Drives are not ready for insertion or removal
during this time.
Blinks green, amber, and off Drive predicted failure
Blinks amber four times per
second
Drive failed
Blinks green slowly Drive rebuilding
Steady green Drive online