I have been trying to troubleshoot a problem with my WBII - and in the process of doing so, I have run into some interesting LED patterns - not all of which I am familiar with.
I will begin by enumerating them below - filling in the patterns that are either in the manual, or are ones I already know the meanings for.
Do please add new meanings and codes, or correct out-of-date codes.
Note: My WBII has *not* been modified in ANY respect at ALL. It has been updated to what it believes is the latest-and-greatest firmware for a 1T worldbook II (My World Book II)
- Outer ring stationary, inner ring stationary with one or more LED's lit.
- Outer ring stationary = no traffic to or from the device, and it's idle.
- Inner ring stationary with one or more LED's lit = a "graphical" view of how much space has been used.
- Outer ring moving in a clockwise direction, inner ring stationary with one or more LED's lit.
- Outer ring moving in a clockwise direction = the device is doing *something* - responding to network traffic, sending or receiving data or performing routine internal maintainance.
- Inner ring stationary - same as above. This is the "fuel gauge" you will hear people talking about.
- Outer ring alternating between top-and-bottom LEDs and side-to-side LED's. Inner ring - on solid.
- This pattern indicates a system boot-up / shut-down sequence.
- Alternating inner and outer rings:
- (HP Manual) - Device is operating in RAID degraded mode. (i.e. one of the drives may have failed, and the RAID mirror-set has become broken as a result.)
- (My observation) - Device has detected a (potential?) failure in one of the two drives even if RAID is not being used - and as a result, the integrity of the device/data is in serious jeopardy.
- Both outer and inner rings flashing at the same time.
- (HP Manual) Device over-heat.
- (My observation) I have never seen this pattern.
Patterns I have seen that are not included in the "official" Western Digital documentation.
- Outer ring "fading" in a clockwise direction, inner ring on solid.
- Outer ring alternating between "on solid" and "fading", inner ring showing "normal" fuel gauge.
- Note: "fading" means that two adjacent LEDs are lit, then the most counter-clockwise LED fades out, then the next two light, with the most counterclockwise fading out, etc. etc. in a clock-wise direction. This usually happens very slowly, over a period of time. I suspect that this is the normal "clockwise spin" of the outer ring, but in very slooooow motion.
- This indicates some kind of internal maintainance activity (a fsck of the drives?) going on that is consuming enough processor resources that the LED's cannot "spin" at the rate they normally would.
- The outer AND inner rings rotating rapidly in a clockwise direction - as if one ring is "chasing" the other ring.
- (Unit is RAID-1) This indicates the device is trying to "synchronize" or rebuild the array on the two drives
- (Unit is RAID-0) This indicates that the devise is verifying the integrity of the linear array, and perhaps cleaning up the occasional pointer or two.
- (Unit is post-repair/rebuild/data-recovery) If you have just repaired and/or rebuilt a set of drives externally - and have just turned the system back on after re-installing them - you will see this pattern for a while, while the system convinces itself that the drives are REALLY OK.
- The outer ring on solid while the inner ring spins rapidly.
- This indicates an internal "formatting" process is underway. I have seen this pattern when I have changed the drive's type from LINEAR to RAID, or vice-versa.
There may be other patterns that I have not been "lucky" enough to see. :-D
What say ye?