we are having compaq proliant 3000 server, while we are booting the server its works well. but after some time it shows the following Error
PANIC: cpqw:--PCI Bus parity error(Bus0,dev9,func0) Hour 9,5/21/7
Trying to dump 32667 pages to dumpdev hd(1/41),409 pages per '.'.
WARNING: Nested NMI(#32) on processor #1 -alreadty processing an NMI(#32) and system hangs. pls give to suggestions to takle this problem.

we are having compaq proliant 3000 server, while we are booting the server its works well. but after some time it shows the following Error
PANIC: cpqw:--PCI Bus parity error(Bus0,dev9,func0) Hour 9,5/21/7
Trying to dump 32667 pages to dumpdev hd(1/41),409 pages per '.'.
WARNING: Nested NMI(#32) on processor #1 -alreadty processing an NMI(#32) and system hangs. pls give to suggestions to takle this problem.

HP/Compaq product support
A server related forum

it sounds like you have a hardware fault,
so if you are not covered by a maintenance agreement Id look at what ever device is number 9 on your PCI bus 0

and perhaps work out what could be generating a non maskable interrupt.

my gut feeling is that if you cant clear the fault by say reseating the card, Id replace it.