Also, I have seen a number of cases where the automatic transfer switch fails.
That's often hard to test until an actual power failure occurs.
That being said, they should have the backup facility ready to be up and
running very quickly.
One thing I am wondering is if it would be possible for the NWS to feed the IDD
a IP NOAAPORT feed from the NWSTG? That way if the SBN goes down the
community/NWS still has a data stream.
They could feed they a few sites of the sites then (UCAR, T A&M, WISC, NWS
REGIONS) that have a lot of bandwidth and then they could in turn feed the NWS
local offices key products if the SBN goes offline. Also the user community
won't be in the dark if the satellite get knocked out, which we have seen
happen in the past (ie, Galaxy 4 1998 & others). We would be happy to be a
relay site.
This might not completely solve the problem, but might help.
- Mike
> On Nov 6, 2014, at 12:05 PM, Gerry Creager - NOAA Affiliate
> <gerry.creager@xxxxxxxx> wrote:
>
> A lot of the data center systems are engineered to a 15 minute up-time on
> UPS, anticipating a 90-sec generator startup and stabilization period... and
> some slack for failure to automatically start, requiring manual intervention.
>
> Similarly, I'm used to semi-annual commercial power failover tests, monthly
> generator tests (I wouldn't argue with weekly) and monthly UPS testing
> without failover.
>
> I do NOT know what the power configuration is for SBN, so I'm not casting
> stones here, but I'm familiar with a fair number of, and wide variety of
> UPS/generator configurations. And, I can recall a situation with a hospital
> some years ago, where a friend was their chief engineer. He did weekly
> generator tests, and monthly failover tests. And when they had an actual loss
> of commercial power, despite the frequent testing, his generator failed to
> start. It can happen despite appropriate testing.
>
>
> Gerry
>
>> On Thu, Nov 6, 2014 at 10:59 AM, Rodger R. Getz <rgetz@xxxxxxxx> wrote:
>> Don't they have all the primary components on UPS systems? Their UPS setup
>> should allow at least an hour on batteries in case of generator failure. If
>> it's true that the backup uplink has no generator, that's a disgrace! The
>> contract should have required that both uplinks have a minimum of 1 hour UPS
>> and both have generators. Generators tests should be done weekly and UPS
>> systems tested monthly. This shows some very weak links in the system!
>>
>> Rodger
>>
>> Rodger R. Getz, President and CEO
>> AWIS Weather Services
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>> Auburn, AL 36830-5204
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>>
>> > On Nov 6, 2014, at 10:12 AM, Gilbert Sebenste
>> > <sebenste@xxxxxxxxxxxxxxxxxxxxx> wrote:
>> >
>> > On Thu, 6 Nov 2014, Wojtowicz, David wrote:
>> >
>> >> You'd think switching to the backup facility would be somewhat of an
>> >> automated process. (I don't know what it actually involves)
>> >
>> > It is and it isn't. You have to cleanly shutdown the primary uplink, and
>> > then spin up the backup uplink at the same time. Normally, this
>> > process can be done manually, but quickly. The problem is when your
>> > uplink that you are using goes down, and you can't communicate
>> > with it. You have to shut that one off first, or else you
>> > can get two uplinks transmitting to one bird, when the
>> > primary comes back online...which is a bad situation. In that case, and I
>> > don't know how it's done, you have to manually
>> > shut off the uplink you were using, and then quickly spin up the other
>> > backup uplink.
>> >
>> > In this case, I completely understand why it takes them an hour and
>> > more to do that, because they also need a little time to figure out why
>> > they lost the uplink in the first place. The two issues now are:
>> >
>> > 1. Why did the generator on the primary system fail?
>> > 2. The backup uplink, which they are on now, I think has no generator
>> > backup, only commercial power. Please correct me if I'm wrong...
>> >
>> > Gilbert
>> >
>> > *******************************************************************************
>> > Gilbert Sebenste
>> > ********
>> > (My opinions only!) ******
>> > Staff Meteorologist, Northern Illinois University ****
>> > E-mail: sebenste@xxxxxxxxxxxxxxxxxxxxx ***
>> > web: http://weather.admin.niu.edu **
>> > Twitter: http://www.twitter.com/NIU_Weather **
>> > Facebook: http://www.facebook.com/niu.weather *
>> > *******************************************************************************
>> >
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>>
>>
>>
>>
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>
>
> --
> Gerry Creager
> NSSL/CIMMS
> 405.325.6371
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