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DCSE: PowerEdge 1550 Self-Study Version 0.3, 4 December, 2000
Page 10 Dell
Power-on LED:
• On green solid: powered and running.
• Amber blinking: sleep state.
Hard Drive LED Operation
When used in conjunction with a PowerEdge Expandable RAID
Controller, the backplane supports enhanced LED patterns to inform the
user of drive activity. The following functions (taken from Backplane
Firmware Specification) are implemented:
• IDENTIFY
The IDENTIFY condition is the highest priority condition of the indicated
conditions. This condition can apply to both populated and empty slots.
The online/fault LED is flashing green on for 125 ms, off for 125 ms and
so on.
The IDENTIFY status condition is terminated when another status
condition is set using the SAF-TE "perform slot operation" command,
when a drive is inserted into or removed from the Identified slot, or after
thirty seconds have elapsed.
• SLOT DEVICE BEING PREPARED FOR REMOVAL
This pattern is displayed during the 30-second drive spin-down period.
The online/fault LED is flashing green on for 250msec, off for 250msec
and so on.
(For all additional status conditions, the activity led is used only to
indicate drive activity.)
• SLOT DEVICE BEING PREPARED FOR OPERATION
This pattern is displayed during the 3-second drive power up period. The
online/fault LED is green on.
• SLOT EMPTY
The online/fault led and the activity led (since there is no drive present)
are off.
• SLOT READY FOR DRIVE INSERTION OR REMOVAL
The online/fault led and the activity led are all off.
• DRIVE FAILED