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DL585 G7 Power supply issues

PS-Support T-Systems
Occasional Contributor

DL585 G7 Power supply issues

Hello at all,

HP is not able to help us and cannot reproduce the following issue right now.

We have our test machine configured with 2+2 powersupplies (2_required 4_redundancy) as shown in RBSU Guide for DL580 G7 (it works on 585 G7 too altough it's not documented).
But we observed a strange behavior: the machine is going to reboot (or shutdown) if the 2 required powersupplys are connected well.
This issue is reproducable app.4 times if we test the machine in failover tests.
Has anyone seen this already?
RBSU settings are ok, a configfile got by conrep shows us the correct setting.
SystemROM version is the latest (01/29/2011) and iLO3 FW (1.20) too.