[Halla_running] Update on Power to the CH [ was: Counting house computers will be down ]

[Ole Hansen]

Hi Brad,

thanks for the update.

Indeed, if the non-emergency circuits are up while the generator is
reconnected in a few weeks, we can temporarily connect the computers to
those and stay up continuously. The UPSs allow switching between power
feeds without downtime.

Is the schedule for the planned work/outages available somewhere?
Alternatively, how do I view and/or sign up for outage notifications? I
only hear about it, but am never told where to find details.

Ole

On 09/11/2014 04:38 PM, Brad Sawatzky wrote:
> Hi all,
> 
> Just a quick update on the power situation.
> 
> Upshot:
>   Emergency power will dropping out again tomorrow (Friday) morning.
>   The adaq and cdaq machines should be back up noon on Friday and should
>   stay up.
> 
> 
> What's happening:
>   The emergency circuit that is currently providing power to the Hall A
>   racks and some IT switches is currently up, /however/ it will be going
>   down again tomorrow sometime after 6am and will be back before noon.
> 
>   During that time Facilities will wire in a few more power sockets off
>   the emergency circuit to supply power to the Hall C computer racks.
> 
>   After that both Hall A and C should have stable power off the
>   emergency line for about 1.5--2 weeks.  Note that the generator
>   that normally backs the emergency circuit is /not/ in the loop
>   right now (see Walt's message below.)
> 
>   At some point after the generator is repaired the emergency power
>   circuit will need to be shut down in order to hook the generator back
>   into the circuit.  _Hopefully_ we can defer that interruption until
>   after other non-emergency circuits are re-energized.  That means we
>   should /not/ have to shut down the computers again.
> 
>   Either way, we (Walt, Ole, Brad, Bryan, etc) should be notified before
>   any future interruptions so we can plan for them and minimize
>   downtime.
> 
> -- Brad
> 
> On Wed, 10 Sep 2014, Walt Akers / JLAB wrote:
> 
>> All:
>>
>> I've put together a draft plan/outline of events and sent
>> it to Rusty for discussion.  I'd like to have them check it
>> for factual accuracy before I send it out, but we are
>> close to a solution for the ongoing power issues.
>>
>> Regarding emergency power, I did discuss the situation
>> briefly with Brad this evening,  and I can give you the
>> same information I shared with him.
>>
>> 1) Transformer T-8 (the one that is backed-up by the
>> generator) is back online and fully operational.
>>
>> 2) The generator is NOT running at this time.
>>
>> 3) Facilities is contracting to have the generator rebuilt
>> and exhaustively tested immediately.
>>
>> 4) In the event that a tropical storm or hurricane is projected
>> before the generator is repaired, Facilities will procure a
>> temporary generator for the End Station Loop and connect
>> it before the storm arrives. (This connection will require
>> a half day outage to connect and another to disconnect - so
>> it is not the best option unless an outage is expected).
>>
>> Just today we have implemented several decisions that
>> should minimize unexpected and unplanned outages, all
>> of which are detailed in the draft document.
>>
>> For now, I would encourage you to bring the systems
>> back online on the existing power and I will provide you
>> as much other information as possible in the very near
>> future.
>>
>> Walt

-------------- next part --------------
A non-text attachment was scrubbed...
Name: ole.vcf
Type: text/x-vcard
Size: 321 bytes
Desc: not available
Url : https://mailman.jlab.org/pipermail/halla_running/attachments/20140911/d9204af8/attachment.vcf 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 213 bytes
Desc: OpenPGP digital signature
Url : https://mailman.jlab.org/pipermail/halla_running/attachments/20140911/d9204af8/attachment.bin