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A20 hardware error on Proliant 800

Daron_1
Occasional Contributor

A20 hardware error on Proliant 800

I have a proliant 800 which stalls very regulalry. It is running SCO. I have done offline diags on it and it stalls during this with an "A20 Hardware Error" message on the screen. I can't find any resources to tell me what this message means.