EonStor DS B12/B24 Series
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Differential Diagnosis to Determine Backplane Failure
Apart from obvious damage (circuit exposure, extreme enclosure deformation, etc.),
an indication of enclosure backplane failure can be determined by differential
diagnosis. The simple differential diagnosis will also assist in Technical Support staffs
to promptly identify the issue!
Differential diagnosis can be done by swapping two modules to test the backplane’s
integrity. For example, if the status LED of the PSU 0 lights up
RED
(indicating failure)
and normally you would order a new PSU to replace the failed one. If you have
replaced the failed PSU and find that the status LED still lights up
RED
then there is
a chance that the backplane may be faulty! To test it, shutdown the system (refer to
) pull out the brand new replacement power supply, insert it into
the PSU 1 slot, power on the system and if the status LED lights up
GREEN
,
then the
backplane board may be faulty and you will need to replace the enclosure to rectify
this problem. The same differential diagnosis method can be applied using
controllers / hard drives / cooling modules (2U/ 3U/ 4U systems) by swapping them
into the other slot.
