SUMMARY: auto restart

From: Krisztian Toth <sahin_at_IRIS.geobio.elte.hu>
Date: Wed, 17 Sep 1997 17:00:46 +0200 (METDST)

Hello,

My original question was:



Hello Gurus,

Some SGI machine support the wakeupat commad. Wakeupat allows you to
specify a time at which the system will power on by itself. Off course
only some specific machine with specific hardware support this...

Is this possibile in the DEC's world? It is important for me, because
there are some 4100 whit UPS. So if the power is lost and the UPS isn't
run down ( there was an enough power in UPS), we must restart manualy our
machine's (because the UPS sent the shutdown signal, if has 10% power
yet).

Any advice?

Thank you for your all trouble!



                        Krisztian Toth

--------------------------------------------------------------------------------


And here are the answers:



>From Knut.Hellebo_at_nho.hydro.com Wed Sep 17 16:53:47 1997
Date: Mon, 15 Sep 1997 11:42:51 +0200
From: Knut Hellebx <Knut.Hellebo_at_nho.hydro.com>
To: Krisztian Toth <sahin_at_IRIS.geobio.elte.hu>
Subject: Re: auto restart

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Regards,

In short: NOT possible with Alphas.

-- 
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>From webster_at_ssdpdc.lgb.cal.boeing.com Wed Sep 17 16:55:17 1997
Date: Mon, 15 Sep 1997 01:39:14 -0700
From: Tom Webster <webster_at_ssdpdc.lgb.cal.boeing.com>
To: sahin_at_IRIS.geobio.elte.hu
Subject: Re: auto restart
Krisztian,
> Some SGI machine support the wakeupat commad. Wakeupat allows you to
> specify a time at which the system will power on by itself. Off course
> only some specific machine with specific hardware support this...
> 
> Is this possibile in the DEC's world? It is important for me, because
> there are some 4100 whit UPS. So if the power is lost and the UPS isn't
> run down ( there was an enough power in UPS), we must restart manualy our
> machine's (because the UPS sent the shutdown signal, if has 10% power
> yet).
I'm not sure I follow your problem.  I agree that a wakeupat command, or
a wakup-on-net like IBM and HP are working on for PC would be nice, I'm not
sure that it relates directly to your problem.
I think you can get to where you want to be by just setting the auto-action
to 'boot' at the console prompt.  This will cause the system to automatically
restart when power from the UPS resumes.  You can change this setting by 
halting the system down to the console prompt (>>>), and issuing the following
command:
   set auto_action boot
   init
   
The init will commit the change to NVRAM and re-init the system with the new
values.
Depending on the capabilites of your UPS (programability, runtime, etc) you 
may want to think about altering the the point at which the UPS does an orderly
shutdown.  It sounds like you are waiting until you get a low-battery warning
from the UPS before shutting down.  I don't know about your area, but out here
the power is either going to be off for less than 10min or more than a half an
hour.  What I like to do is get a UPS that can support the hardware (plus a
little for growth) for about 15min.  Then we can setup the UPS to do an orderly 
shutdown after 10min.
What the reserve 33% of battery power gives us is the ability to restart and
shutdown the system quickly once or twice if the power company yo-yo's the 
power on us.  (They seem to be fond of replacing a transformer and switching
the power back on -- only to blow another down the line, so our longer outages
tend to have a couple of false starts.)
Hope this helps,
Tom
--
+-----------------------------------+---------------------------------+
| Tom Webster                       |  "Funny, I've never seen it     |
| SysAdmin MDA-SSD ISS-IS-HB-S&O    |   do THAT before...."           |
| webster_at_ssdpdc.lgb.cal.boeing.com |   - Any user support person     |
+-----------------------------------+---------------------------------+
|      Unless clearly stated otherwise, all opinions are my own.      |  
+---------------------------------------------------------------------+
-------------------------------------------------------------------------------
Thank you for yours all answers!!!
			Krisztian Toth

Received on Wed Sep 17 1997 - 17:41:43 NZST