ProLiant Servers (ML,DL,SL)
cancel
Showing results for 
Search instead for 
Did you mean: 

How to keep a ML370 Running when the system board fails

Robert Bohlken
Occasional Visitor

How to keep a ML370 Running when the system board fails

When the multiple fan failure occurs on a ML370 that requires the system board to be replaced, you can keep the system running by a simple application of duct tape and shop vac. All it takes is enough output air pressure to spin the two front fans and one of the rear fans will start operating from the bad system board. This allows enough operation to get the system backed up or be used 'normally' until HP can get the part out.
5 REPLIES
Daniel Leblanc
Honored Contributor

Re: How to keep a ML370 Running when the system board fails

That a could one NUMBER ONE MAN!!

Happy christmas and new year !!!!

Dan
seehigh
Advisor

Re: How to keep a ML370 Running when the system board fails

Nice !!! but the VAC is not power redundant
Brian_Murdoch
Honored Contributor

Re: How to keep a ML370 Running when the system board fails

Hi Robert,

That's quite ingenious. The fan problem is a well known one with the ML370 G3. Sometimes if you are lucky simply removing the redundant fans is enough to allow the fan logic to work. You only really need all 6 fans when you have both cpu's, fully populated memory dimm slots and lots of PCI devices.

Keep fans 1,3 and 5 and remove fans 2,4 and 6 to see if this works. If the fan logic circuit is damaged beyond repair this won't make any difference however.
(See attached diagram with fan layout)

Regards,

Brian
Brian_Murdoch
Honored Contributor

Re: How to keep a ML370 Running when the system board fails

Hi Robert,

That's quite ingenious. The fan problem is a well known one with the ML370 G3. Sometimes if you are lucky simply removing the redundant fans is enough to allow the fan logic to work. You only really need all 6 fans when you have both cpu's, fully populated memory dimm slots and lots of PCI devices.

Keep fans 1,3 and 5 and remove fans 2,4 and 6 to see if this works. If the fan logic circuit is damaged beyond repair this won't make any difference however.
(See attached diagram with fan layout)

Regards,

Brian
Edmund White
Frequent Advisor

Re: How to keep a ML370 Running when the system board fails

Thank you. This may be a lifesaver in my case. All of the G3 ML370's we sold in 2003 are demonstrating the same failure pattern. The one in the attached photo had to run in this state for two weeks until we could locate a new system board or replace the server.