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HiWe were experiencing an issue where the startup config was erased on both switches in a virtual stack on power on from cold. This only happened at random and eventually TAC identified a bug: https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvt13067 ...
We have the same issue. We have had two different pairs of 9407 exhibit the same behaviour. We have established that it is something to do with StackWise as the problem does not occur in non-stacked configurations. We had raised a case with TAC when ...