Re: 9406-720 Internal Battery Self Test

[DrFranken <midrange@xxxxxxxxxxxx>]

If you are talking about the batteries INSIDE the 9406-720 itself, those 
will run for 7 seconds and then shutdown, even if the batteries are 
spanking new. The remainder of the battery life is reserved to hold the 
contents of the system's main memory up so that it can be copied to disk 
during the next (abormal) IPL.

As I recall the Eaton Powerware unit doesn't have a specific battery 
test. Even if it did, these tests are a 'best guess' based on a number 
of seconds on battery.

If you want a full length battery test follow this procedure:
    Bring the system down to restricted condition (ENDSYS) and let it 
sit there for a few minutes. This will get the disk caches mostly 
cleared out.
    Note the value of QUPSDLYTIM and then change it to 99999.
    Now pull the power to the Eaton and count the time it takes to run 
out of battery. It's your call if you don't actually let it fail and 
plug it back in at say 10% of battery but to know how long you really 
have it's gotta die.
    Once the Eaton unit powers off make sure the system does hang on 
for 6 or 7 seconds to at least know the internal 720 batteries are not 
totally dead.
    Plug the UPS back in and let it charge for 30 minutes or more to 
put some life back into the batteries.
    IPL, and remember to change QYPSDLYTIM back to it's previous setting.

    - Larry "DrFranken" Bolhuis.

On 4/1/2011 10:57 AM, Martin Spencer wrote:
> Hi All,
>
> Is there a method to test the internal batteries on a 9406-720 without
> taking it off the UPS and running it via the internal batteries, or, do we
> need to power down the UPS while the 720 is running and wait for it to crash
> out?
>
> We need to do some failure testing on some systems that are connected to
> UPS's but we are unsure of how healthy the UPS's are (they are Eton
> Powerware 9325s, as specified by IBMs Econfig, and are 4 years old).
>
> What we need to find out is should there be a power failure how long can
> the 720 continue to run once the UPS battery has depleted. Obviously the UPS
> are set to send the signal to the AS/400 to begin a PWRDWN IMMED as soon as
> there is a power disruption.
>
> Your thoughts, as always, are appreciated.
>
> Tin.