Re: taking down the machine - z9 series

2010-06-22 Thread Timothy Sipples
From what I understand, myriad regulatory agencies around the world require
the single accessible big red power switch design, and not only for
servers but also for a wide variety of non-computing equipment, small and
large. IBM may or may not have a different design philosophy about its red
switch(es), but it doesn't matter.

IBM does offer solutions with two power switches. That'd be two frames,
ideally coupled and physically separated.

- - - - -
Timothy Sipples
Resident Architect (Based in Singapore)
STG Value Creation and Complex Deals Team
IBM Growth Markets
E-Mail: timothy.sipp...@us.ibm.com
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Re: taking down the machine - z9 series

2010-06-21 Thread Kevin Kinney
I'm afraid I was responsible for a shield, but on a bank of 3490 drives. 
For some reason, the (unshielded) power switch was placed at EXACTLY the
same level as a button on the back pocket of suit pants.  Anyone leaning
against the drives...

The first time an entire string of tape drives powered down, no one could
figure it out.  I was busted the second time it happened.  Soon thereafter
shields were velcroed over the power switch.

For a while, I was suspected for any unexplained outage, whether it was my
shift or not.

To the designer of the 3490 cabinet, thanks a lot.

Regards,
Kevin Kinney

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Re: taking down the machine - z9 series

2010-06-21 Thread Ted MacNEIL
I was working, in Montreal, in the early 1980's.
We had a true rookie, out on the floor sitting at an AMDAHL console on the 
Control Element of one of our 470's.

The Payroll clerk had just come in with the bi-weekly card decks for our run.

She handed them to the reader operator, and he fed them in, as the cheque run 
started.

Suddenly, she noticed that it was the inputs for the run, two weeks ago.

She suddenly screamed that we had to stop the system, it was an emergency.
The rookie obliged and hit the big red button to the right of the screen.
Bamf! It took four Amdahl reps over 12 hours to replace everything that 
overheated, because with an EPO, even the fans stop.

The rookie got to keep his job though.
He was, as I stated, a true rookie, with less than an hour's worth of 
experience.

Of course, we kidded him mercilessly.
Especially, the rookies, of which I was one of them.
At the time, I was less than 6 months on the job.

I never did find out what happened to the payroll clerk, though.
-
Too busy driving to stop for gas!

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Re: taking down the machine - z9 series

2010-06-21 Thread Veilleux, Jon L
Our tape carriers used to do the same thing. The off button was just at the 
right height to be hit by an inadvertent push of the tape carriers. 


Jon L. Veilleux 
veilleu...@aetna.com 
(860) 636-9179 


-Original Message-
From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of 
Kevin Kinney
Sent: Monday, June 21, 2010 8:35 AM
To: IBM-MAIN@bama.ua.edu
Subject: Re: taking down the machine - z9 series

I'm afraid I was responsible for a shield, but on a bank of 3490 drives. 
For some reason, the (unshielded) power switch was placed at EXACTLY the same 
level as a button on the back pocket of suit pants.  Anyone leaning against the 
drives...

The first time an entire string of tape drives powered down, no one could 
figure it out.  I was busted the second time it happened.  Soon thereafter 
shields were velcroed over the power switch.

For a while, I was suspected for any unexplained outage, whether it was my 
shift or not.

To the designer of the 3490 cabinet, thanks a lot.

Regards,
Kevin Kinney

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Re: taking down the machine - z9 series

2010-06-21 Thread Shane Ginnane
No just the old 470s ...
You cut the fans, you cut the air - then the heat moves from the heat sinks 
back into the chip(s). Bad, 
all bad.
Have you seen how big the heat sinks are these days - even on PCs ?.
Densely packed chips generate a *lot* of heat.

Shane ...

 Bamf! It took four Amdahl reps over 12 hours to replace everything
 that overheated, because with an EPO, even the fans stop.

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Re: taking down the machine - z9 series

2010-06-21 Thread Anne Lynn Wheeler
The following message is a courtesy copy of an article
that has been posted to bit.listserv.ibm-main,alt.folklore.computers as well.


eamacn...@yahoo.ca (Ted MacNEIL) writes:
 She suddenly screamed that we had to stop the system, it was an
 emergency.  The rookie obliged and hit the big red button to the right
 of the screen.  Bamf! It took four Amdahl reps over 12 hours to
 replace everything that overheated, because with an EPO, even the fans
 stop.

there is the early 3081 TCM story about heat exchange had flow sensor on
the inboard side ... but not on the outboard side (of the heat
exchanger). one customer lost flow on the outboard side of the heat
exchanger ... and there was so much heat in the system ... that by the
time the thermal sensors caught the rise in temperature ... it was too
late ... and fried all the TCMs (a TCM ran something like low six
figures). after that, systems were retrofitted with flow sensors on the
outboard side.

description (some) of 3081 technology
http://www.jfsowa.com/computer/memo125.htm

misc. past posts mentioning frying 3081 TCMs
http://www.garlic.com/~lynn/2000b.html#36 How to learn assembler language for 
OS/390 ?
http://www.garlic.com/~lynn/2000b.html#38 How to learn assembler language for 
OS/390 ?
http://www.garlic.com/~lynn/2001k.html#4 hot chips and nuclear reactors
http://www.garlic.com/~lynn/2002d.html#13 IBM Mainframe at home
http://www.garlic.com/~lynn/2004p.html#35 IBM 3614 and 3624 ATM's
http://www.garlic.com/~lynn/2004p.html#36 IBM 3614 and 3624 ATM's
http://www.garlic.com/~lynn/2004p.html#41 IBM 3614 and 3624 ATM's
http://www.garlic.com/~lynn/2008i.html#96 A Blast from the Past
http://www.garlic.com/~lynn/2009b.html#77 Z11 - Water cooling?
http://www.garlic.com/~lynn/2010d.html#43 What was old is new again (water 
chilled)

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Re: taking down the machine - z9 series

2010-06-21 Thread Dave Kopischke
On Mon, 21 Jun 2010 09:10:26 -0400, Veilleux, Jon L 
veilleu...@aetna.com wrote:

Our tape carriers used to do the same thing. The off button was just at the 
right height to be hit by an inadvertent push of the tape carriers.


It's not just old equipment. On the z9/z10, the shield for the power switch is 
on the door. If you open the door, no shield. We had some UPS work 
scheduled, so our IBM CE had the door open and one of the service 
processors open. He was talking with one of our operators who reached out 
his hand to lean against the frame and leaned on the power switch. 
Apparently, if you push the power switch in slightly, it will toggle ??? I 
don't 
know. Never tried it. Anyway, the z9 goes dark. The no outage UPS work 
turned into a major outage. Maybe IBM should design a separate switch for 
each power feed ???

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Re: taking down the machine - z9 series

2010-06-18 Thread Ed Gould

From: Mark Jacobs mark.jac...@custserv.com
To: IBM-MAIN@bama.ua.edu
Sent: Thu, June 17, 2010 8:56:01 AM
Subject: Re: taking down the machine - z9 series
---SNIP---

We called it a 'Sheldon shield' after an operator hit the IML button on the old 
3033 console keyboard several times unexpectedly.

snip

-- Mark Jacobs
Time Customer Service
Tampa, FL


Mark:

Funny you should talk about this. Long ago and far away when I worked for  the 
same company you are at we had a MP168 and we had 
several issues like the one you mentioned. The one that I remember the most was 
the EPO on the console. One of the operators hung something on it and of course 
the contents shifted and oops no system. Unfortunately this was at a time we 
were IPLing 15 times a day for some other issue and the DC manager was furious 
and actually threw a listing or a magazine at the operator and (chuckle) that 
hit the operator and then hit the power off button, can we say OOPS.. Operator 
was not hurt but was really po'ed. (I can tell you a further story but it would 
have to be offline).

After that we had a hinged plastic square put on both consoles so that would 
not happen again and then the EPO  was labeled in big red letters to stay away 
from.

Ed



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Re: taking down the machine - z9 series

2010-06-18 Thread Jan MOEYERSONS
On Thu, 17 Jun 2010 15:44:45 +0300, Matan Cohen 
matancohen...@gmail.com wrote:

in the past I  remeber i was told never to cut power using the emergency
switch ( i don't know the reason for that but it was said by a wise man).

There were machines that had built-in fire extinguishers. These would trip 
when the emergency power-off switch was hit. 

Needless to say that could cause some havoc...

Jantje.

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taking down the machine - z9 series

2010-06-17 Thread Matan Cohen
Hi,
When the situation force you to taking down the machine (due to Electricity
power cut) , after taking down the lpars.
do you perform anything else beside deactivation of the CPC ?
i met a diffrent opinion in this matter .


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matan cohen
MF System Administrator.

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Re: taking down the machine - z9 series

2010-06-17 Thread Kelman, Tom
I'm assuming that the electricity power cut, or whatever is happening,
is scheduled.  You know ahead of time that it is going to happen.

If the power to your data center is going to be shut down for some
reason wouldn't you want to have a controlled power down of the complete
data center?  I know in the good old days if power was all of a sudden
cut to the disk drives, head crashes were sure to occur.  I don't know
if that is a problem or not these days.  

-Original Message-
From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On
Behalf Of Matan Cohen
Sent: Thursday, June 17, 2010 7:06 AM
To: IBM-MAIN@bama.ua.edu
Subject: taking down the machine - z9 series

Hi,
When the situation force you to taking down the machine (due to
Electricity
power cut) , after taking down the lpars.
do you perform anything else beside deactivation of the CPC ?
i met a diffrent opinion in this matter .


-- 
best regards,
matan cohen
MF System Administrator.

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Re: taking down the machine - z9 series

2010-06-17 Thread R.S.

Matan Cohen pisze:

Hi,
When the situation force you to taking down the machine (due to Electricity
power cut) , after taking down the lpars.
do you perform anything else beside deactivation of the CPC ?
i met a diffrent opinion in this matter .


Yes, we do. We shutdown SE and then cut the power using emergency 
switch. Electricity works could mean several up-down sequences which are 
not good for any machine.


--
Radoslaw Skorupka
Lodz, Poland


--
BRE Bank SA
ul. Senatorska 18
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www.brebank.pl

Sd Rejonowy dla m. st. Warszawy 
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2008r., oraz uchway XVI NWZ z dnia 27 padziernika 2008r., moe ulec 
podwyszeniu do kwoty 123.763.528 z. Akcje w podwyszonym kapitale zakadowym 
BRE Banku SA bd w caoci opacone.

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Re: taking down the machine - z9 series

2010-06-17 Thread Matan Cohen
R.S wrote We shutdown SE SE  stand for?
I did this sort of shutdown at diffrent Data center the time elctricity
power cut is schedule from advance.
in the past I  remeber i was told never to cut power using the emergency
switch ( i don't know the reason for that but it was said by a wise man).

tom- i do want to perform a control power cut. i asked on the best way to
perform this for the Z machine
On Thu, Jun 17, 2010 at 3:28 PM, R.S. r.skoru...@bremultibank.com.plwrote:

 Matan Cohen pisze:

  Hi,
 When the situation force you to taking down the machine (due to
 Electricity
 power cut) , after taking down the lpars.
 do you perform anything else beside deactivation of the CPC ?
 i met a diffrent opinion in this matter .


 Yes, we do. We shutdown SE and then cut the power using emergency switch.
 Electricity works could mean several up-down sequences which are not good
 for any machine.

 --
 Radoslaw Skorupka
 Lodz, Poland


 --
 BRE Bank SA
 ul. Senatorska 18
 00-950 Warszawa
 www.brebank.pl

 S d Rejonowy dla m. st. Warszawy XII Wydzia  Gospodarczy Krajowego Rejestru
 S dowego, nr rejestru przedsi biorców KRS 025237
 NIP: 526-021-50-88
 Wed ug stanu na dzie  01.01.2009 r. kapita  zak adowy BRE Banku SA (w ca o
 ci wp acony) wynosi 118.763.528 z otych. W zwi zku z realizacj  warunkowego
 podwy szenia kapita u zak adowego, na podstawie uchwa y XXI WZ z dnia 16
 marca 2008r., oraz uchwa y XVI NWZ z dnia 27 pa dziernika 2008r., mo e ulec
 podwy szeniu do kwoty 123.763.528 z . Akcje w podwy szonym kapitale zak
 adowym BRE Banku SA b d  w ca o ci op acone.


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best regards,
matan cohen
MF System Administrator.

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Re: taking down the machine - z9 series

2010-06-17 Thread Mark Pace
SE = System Element.  The laptops within the z9.

I would also shutdown the HMC  (Hardware Management Console).


On Thu, Jun 17, 2010 at 8:44 AM, Matan Cohen matancohen...@gmail.comwrote:

 R.S wrote We shutdown SE SE  stand for?
 I did this sort of shutdown at diffrent Data center the time elctricity
 power cut is schedule from advance.
 in the past I  remeber i was told never to cut power using the emergency
 switch ( i don't know the reason for that but it was said by a wise man).

 tom- i do want to perform a control power cut. i asked on the best way to
 perform this for the Z machine
 On Thu, Jun 17, 2010 at 3:28 PM, R.S. r.skoru...@bremultibank.com.pl
 wrote:

  Matan Cohen pisze:
 
   Hi,
  When the situation force you to taking down the machine (due to
  Electricity
  power cut) , after taking down the lpars.
  do you perform anything else beside deactivation of the CPC ?
  i met a diffrent opinion in this matter .
 
 
  Yes, we do. We shutdown SE and then cut the power using emergency switch.
  Electricity works could mean several up-down sequences which are not good
  for any machine.
 
  --
  Radoslaw Skorupka
  Lodz, Poland
 
 
  --
  BRE Bank SA
  ul. Senatorska 18
  00-950 Warszawa
  www.brebank.pl
 
  S d Rejonowy dla m. st. Warszawy XII Wydzia  Gospodarczy Krajowego
 Rejestru
  S dowego, nr rejestru przedsi biorców KRS 025237
  NIP: 526-021-50-88
  Wed ug stanu na dzie  01.01.2009 r. kapita  zak adowy BRE Banku SA (w ca
 o
  ci wp acony) wynosi 118.763.528 z otych. W zwi zku z realizacj
  warunkowego
  podwy szenia kapita u zak adowego, na podstawie uchwa y XXI WZ z dnia 16
  marca 2008r., oraz uchwa y XVI NWZ z dnia 27 pa dziernika 2008r., mo e
 ulec
  podwy szeniu do kwoty 123.763.528 z . Akcje w podwy szonym kapitale zak
  adowym BRE Banku SA b d  w ca o ci op acone.
 
 
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 --
 best regards,
 matan cohen
 MF System Administrator.

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-- 
Mark Pace
Mainline Information Systems
1700 Summit Lake Drive
Tallahassee, FL. 32317

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Re: taking down the machine - z9 series

2010-06-17 Thread R.S.

Mark Pace pisze:

SE = System Element.  The laptops within the z9.

I would also shutdown the HMC  (Hardware Management Console).


I would do the same IF the HMC was in the same room, on the same switch. 
 I would do the same for every device on the circuit. vbg


BTW: SE = Support Element. A laptop (singular)

--
Radoslaw Skorupka
Lodz, Poland


--
BRE Bank SA
ul. Senatorska 18
00-950 Warszawa
www.brebank.pl

Sd Rejonowy dla m. st. Warszawy 
XII Wydzia Gospodarczy Krajowego Rejestru Sdowego, 
nr rejestru przedsibiorców KRS 025237

NIP: 526-021-50-88
Wedug stanu na dzie 01.01.2009 r. kapita zakadowy BRE Banku SA (w caoci 
wpacony) wynosi 118.763.528 zotych. W zwizku z realizacj warunkowego 
podwyszenia kapitau zakadowego, na podstawie uchway XXI WZ z dnia 16 marca 
2008r., oraz uchway XVI NWZ z dnia 27 padziernika 2008r., moe ulec 
podwyszeniu do kwoty 123.763.528 z. Akcje w podwyszonym kapitale zakadowym 
BRE Banku SA bd w caoci opacone.

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Re: taking down the machine - z9 series

2010-06-17 Thread Richards, Robert B.
If your ICFs do not have battery backup, make sure the data is written out 
and/or do a backup/restore equivalent of whatever software is using it for data.

Most shops do structure rebuilds or duplexing, but that doesn't work when *all* 
power is removed from all ICFs. 

Food for thought,

Bob

-Original Message-
From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of 
Kelman, Tom
Sent: Thursday, June 17, 2010 8:28 AM
To: IBM-MAIN@bama.ua.edu
Subject: Re: taking down the machine - z9 series

I'm assuming that the electricity power cut, or whatever is happening,
is scheduled.  You know ahead of time that it is going to happen.

If the power to your data center is going to be shut down for some
reason wouldn't you want to have a controlled power down of the complete
data center?  I know in the good old days if power was all of a sudden
cut to the disk drives, head crashes were sure to occur.  I don't know
if that is a problem or not these days.  

-Original Message-
From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On
Behalf Of Matan Cohen
Sent: Thursday, June 17, 2010 7:06 AM
To: IBM-MAIN@bama.ua.edu
Subject: taking down the machine - z9 series

Hi,
When the situation force you to taking down the machine (due to
Electricity
power cut) , after taking down the lpars.
do you perform anything else beside deactivation of the CPC ?
i met a diffrent opinion in this matter .


-- 
best regards,
matan cohen
MF System Administrator.

--
For IBM-MAIN subscribe / signoff / archive access instructions,
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Re: taking down the machine - z9 series

2010-06-17 Thread Matan Cohen
IBM told me not to shutdown the SE.
IBM saying to perform deactivation and then CPC shutdown.

On Thu, Jun 17, 2010 at 3:54 PM, Mark Pace mpac...@gmail.com wrote:

 SE = System Element.  The laptops within the z9.

 I would also shutdown the HMC  (Hardware Management Console).


 On Thu, Jun 17, 2010 at 8:44 AM, Matan Cohen matancohen...@gmail.com
 wrote:

  R.S wrote We shutdown SE SE  stand for?
  I did this sort of shutdown at diffrent Data center the time elctricity
  power cut is schedule from advance.
  in the past I  remeber i was told never to cut power using the emergency
  switch ( i don't know the reason for that but it was said by a wise man).
 
  tom- i do want to perform a control power cut. i asked on the best way to
  perform this for the Z machine
  On Thu, Jun 17, 2010 at 3:28 PM, R.S. r.skoru...@bremultibank.com.pl
  wrote:
 
   Matan Cohen pisze:
  
Hi,
   When the situation force you to taking down the machine (due to
   Electricity
   power cut) , after taking down the lpars.
   do you perform anything else beside deactivation of the CPC ?
   i met a diffrent opinion in this matter .
  
  
   Yes, we do. We shutdown SE and then cut the power using emergency
 switch.
   Electricity works could mean several up-down sequences which are not
 good
   for any machine.
  
   --
   Radoslaw Skorupka
   Lodz, Poland
  
  
   --
   BRE Bank SA
   ul. Senatorska 18
   00-950 Warszawa
   www.brebank.pl
  
   S d Rejonowy dla m. st. Warszawy XII Wydzia  Gospodarczy Krajowego
  Rejestru
   S dowego, nr rejestru przedsi biorców KRS 025237
   NIP: 526-021-50-88
   Wed ug stanu na dzie  01.01.2009 r. kapita  zak adowy BRE Banku SA (w
 ca
  o
   ci wp acony) wynosi 118.763.528 z otych. W zwi zku z realizacj
   warunkowego
   podwy szenia kapita u zak adowego, na podstawie uchwa y XXI WZ z dnia
 16
   marca 2008r., oraz uchwa y XVI NWZ z dnia 27 pa dziernika 2008r., mo e
  ulec
   podwy szeniu do kwoty 123.763.528 z . Akcje w podwy szonym kapitale zak
   adowym BRE Banku SA b d  w ca o ci op acone.
  
  
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Re: taking down the machine - z9 series

2010-06-17 Thread Pete Borton
We had just such a requirement a few weeks back. Our IBM CE recommended the 
following:

Before the power is going to be switched off: 
Shutdown systems 
Deactivate Lpars 
Deactivate CPC(wait for the CEC to power off)CPC Icon now Black 
Shut down Alt SE 
Shut down Primary SE(wait for both SE to shutdown) 
Shut Down HMC's affected by the power down. 
EPO Off he CPU frame using the Red switch. 

Power Restored 
Power on the HMC's 
EPO on, the cpu frame. 
Wait for the the CPC icon appear on the HMC . 
From this point it will depend how the Customer has set up the Activation 
Profiles or Manually power up... 
Manual power up. 
Power on Icon 
POR icon(check IOCDS is correct) 
Activate Lpars 
IPL or Activate and select the correct  profile(set up by the Customer)  

-Original Message-
From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of 
Matan Cohen
Sent: 17 June 2010 14:34
To: IBM-MAIN@bama.ua.edu
Subject: Re: taking down the machine - z9 series

IBM told me not to shutdown the SE.
IBM saying to perform deactivation and then CPC shutdown.

On Thu, Jun 17, 2010 at 3:54 PM, Mark Pace mpac...@gmail.com wrote:

 SE = System Element.  The laptops within the z9.

 I would also shutdown the HMC  (Hardware Management Console).


 On Thu, Jun 17, 2010 at 8:44 AM, Matan Cohen matancohen...@gmail.com
 wrote:

  R.S wrote We shutdown SE SE  stand for?
  I did this sort of shutdown at diffrent Data center the time 
  elctricity power cut is schedule from advance.
  in the past I  remeber i was told never to cut power using the 
  emergency switch ( i don't know the reason for that but it was said by a 
  wise man).
 
  tom- i do want to perform a control power cut. i asked on the best 
  way to perform this for the Z machine On Thu, Jun 17, 2010 at 3:28 
  PM, R.S. r.skoru...@bremultibank.com.pl
  wrote:
 
   Matan Cohen pisze:
  
Hi,
   When the situation force you to taking down the machine (due to 
   Electricity power cut) , after taking down the lpars.
   do you perform anything else beside deactivation of the CPC ?
   i met a diffrent opinion in this matter .
  
  
   Yes, we do. We shutdown SE and then cut the power using emergency
 switch.
   Electricity works could mean several up-down sequences which are not
 good
   for any machine.
  
   --
   Radoslaw Skorupka
   Lodz, Poland
  
  
   --
   BRE Bank SA
   ul. Senatorska 18
   00-950 Warszawa
   www.brebank.pl
  
   S d Rejonowy dla m. st. Warszawy XII Wydzia  Gospodarczy Krajowego
  Rejestru
   S dowego, nr rejestru przedsi biorców KRS 025237
   NIP: 526-021-50-88
   Wed ug stanu na dzie  01.01.2009 r. kapita  zak adowy BRE Banku SA (w
 ca
  o
   ci wp acony) wynosi 118.763.528 z otych. W zwi zku z realizacj
   warunkowego
   podwy szenia kapita u zak adowego, na podstawie uchwa y XXI WZ z dnia
 16
   marca 2008r., oraz uchwa y XVI NWZ z dnia 27 pa dziernika 2008r., mo e
  ulec
   podwy szeniu do kwoty 123.763.528 z . Akcje w podwy szonym kapitale zak
   adowym BRE Banku SA b d  w ca o ci op acone.
  
  
   --
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   send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO
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  --
  best regards,
  matan cohen
  MF System Administrator.
 
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 --
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 Mainline Information Systems
 1700 Summit Lake Drive
 Tallahassee, FL. 32317

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MF System Administrator.

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Re: taking down the machine - z9 series

2010-06-17 Thread Kelman, Tom
I was in a shop in the early 1980s where we had a very bad experience of the 
power being cut by the use of the emergency switch.  There was a building 
maintenance man in the machine room.  When he went to leave instead of pressing 
the button to activate the door to the mantrap, he pressed the emergency power 
down switch.  They were very close together.  It took us the better part of a 
day to get everything back up.  The processor was no problem, but a few disk 
drives were troublesome. That incident resulted in them moving the emergency 
power down switch away from the door switch, and a cover was put over the 
emergency power down switch.  

-Original Message-
From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of 
Matan Cohen
Sent: Thursday, June 17, 2010 7:45 AM
To: IBM-MAIN@bama.ua.edu
Subject: Re: taking down the machine - z9 series

R.S wrote We shutdown SE SE  stand for?
I did this sort of shutdown at diffrent Data center the time elctricity
power cut is schedule from advance.
in the past I  remeber i was told never to cut power using the emergency
switch ( i don't know the reason for that but it was said by a wise man).

tom- i do want to perform a control power cut. i asked on the best way to
perform this for the Z machine
On Thu, Jun 17, 2010 at 3:28 PM, R.S. r.skoru...@bremultibank.com.plwrote:

 Matan Cohen pisze:

  Hi,
 When the situation force you to taking down the machine (due to
 Electricity
 power cut) , after taking down the lpars.
 do you perform anything else beside deactivation of the CPC ?
 i met a diffrent opinion in this matter .


 Yes, we do. We shutdown SE and then cut the power using emergency switch.
 Electricity works could mean several up-down sequences which are not good
 for any machine.

 --
 Radoslaw Skorupka
 Lodz, Poland


 --
 BRE Bank SA
 ul. Senatorska 18
 00-950 Warszawa
 www.brebank.pl

 S d Rejonowy dla m. st. Warszawy XII Wydzia  Gospodarczy Krajowego Rejestru
 S dowego, nr rejestru przedsi biorców KRS 025237
 NIP: 526-021-50-88
 Wed ug stanu na dzie  01.01.2009 r. kapita  zak adowy BRE Banku SA (w ca o
 ci wp acony) wynosi 118.763.528 z otych. W zwi zku z realizacj  warunkowego
 podwy szenia kapita u zak adowego, na podstawie uchwa y XXI WZ z dnia 16
 marca 2008r., oraz uchwa y XVI NWZ z dnia 27 pa dziernika 2008r., mo e ulec
 podwy szeniu do kwoty 123.763.528 z . Akcje w podwy szonym kapitale zak
 adowym BRE Banku SA b d  w ca o ci op acone.


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 Search the archives at http://bama.ua.edu/archives/ibm-main.html




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MF System Administrator.

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Re: taking down the machine - z9 series

2010-06-17 Thread Mark Jacobs

On 06/17/10 09:51, Kelman, Tom wrote:

I was in a shop in the early 1980s where we had a very bad experience of the 
power being cut by the use of the emergency switch.  There was a building 
maintenance man in the machine room.  When he went to leave instead of pressing 
the button to activate the door to the mantrap, he pressed the emergency power 
down switch.  They were very close together.  It took us the better part of a 
day to get everything back up.  The processor was no problem, but a few disk 
drives were troublesome. That incident resulted in them moving the emergency 
power down switch away from the door switch, and a cover was put over the 
emergency power down switch.

   


We called it a 'Sheldon shield' after an operator hit the IML button on 
the old 3033 console keyboard several times unexpectedly.


snip

--
Mark Jacobs
Time Customer Service
Tampa, FL


Serendipity is looking for a needle in a haystack
and discovering a farmer's daughter.

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Re: taking down the machine - z9 series

2010-06-17 Thread Vernooij, CP - SPLXM
Mark Jacobs mark.jac...@custserv.com wrote in message
news:4c1a2971.1080...@custserv.com...
 On 06/17/10 09:51, Kelman, Tom wrote:
  I was in a shop in the early 1980s where we had a very bad
experience of the power being cut by the use of the emergency switch.
There was a building maintenance man in the machine room.  When he went
to leave instead of pressing the button to activate the door to the
mantrap, he pressed the emergency power down switch.  They were very
close together.  It took us the better part of a day to get everything
back up.  The processor was no problem, but a few disk drives were
troublesome. That incident resulted in them moving the emergency power
down switch away from the door switch, and a cover was put over the
emergency power down switch.
 
 
 
 We called it a 'Sheldon shield' after an operator hit the IML button
on 
 the old 3033 console keyboard several times unexpectedly.
 
 snip
 
 -- 

I know during life brain cells only die and no new ones are generated
and I also know that this goes faster in some brains than in others and
this possibly might be the reason that I often get tired of trying to
find the correct path through the many ONtopic and OFFtopic branches
that threads in this forum often take, but I would appreciate if
branches to paths that might bring up very interesting side-subjects but
do not help the OP in getting an answer to his question were reflected
with a change of subject.

Thanks,
Kees.

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Re: taking down the machine - z9 series

2010-06-17 Thread Hal Merritt
If you have any Os/2 based appliances, then you'd want to gracefully shut them 
down. Otherwise, they will run CHKDSK upon power up, and that takes forever. 
Examples of OS/2 based appliances include the older HMC's, 2074's, etc. Not 
sure if you can do that for the OS/2 based SE's, but, if you can, not a bad 
idea IMHO. (I believe the SE's and HMC are all Linux based on the z/9's. Linux 
recovery is fast enough to be left alone.) 

There is a full power off function somewhere on the HMC or SE. I'd want to find 
and use that. 

You'd want to power off DS8100/Shark DASD units. Otherwise, these units will 
gracefully shut down using their internal batteries but will not come back on 
line until the batteries are completely recharged. That can take a very long 
time.  

Graceful shutdown and power off of other units (tape, VTS, etc) is likely a 
very good idea. 

Keep in mind that some units have 'secret' circuit breakers that trip upon full 
power loss. These 'secret' circuit breakers are supposed to be reset by the CE 
after power is restored and stable. Have your CE show you where these breakers 
are, or, better yet, have the CE on site for power up. 

HTH and good luck.  

-Original Message-
From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of 
Matan Cohen
Sent: Thursday, June 17, 2010 7:06 AM
To: IBM-MAIN@bama.ua.edu
Subject: taking down the machine - z9 series

Hi,
When the situation force you to taking down the machine (due to Electricity
power cut) , after taking down the lpars.
do you perform anything else beside deactivation of the CPC ?
i met a diffrent opinion in this matter .


-- 
best regards,
matan cohen
MF System Administrator.

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Re: taking down the machine - z9 series

2010-06-17 Thread Pinnacle
- Original Message - 
From: Matan Cohen matancohen...@gmail.com

Newsgroups: bit.listserv.ibm-main
Sent: Thursday, June 17, 2010 8:07 AM
Subject: taking down the machine - z9 series



Hi,
When the situation force you to taking down the machine (due to 
Electricity

power cut) , after taking down the lpars.
do you perform anything else beside deactivation of the CPC ?
i met a diffrent opinion in this matter .


--
best regards,
matan cohen
MF System Administrator.



Matan,

A full power-down can be problematic.  I would recommend that you spend the 
extra money to get an IBM FE on site to ensure that all machines are powered 
down correctly.  Most sites I work at haven't powered down in years, so they 
do not know the procedures.  Also, your older equipment may go belly up just 
from the power off, power on process.  I once had to move 6 3174 
controllers, and 3 of the power supplies and one of the diskette drives 
failed on startup.


Good luck,
Tom Conley 


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Re: taking down the machine - z9 series

2010-06-17 Thread George Henke
I have powered down and powered up whole data centers numerous times usually
for electrical, power plant work, sometimes because the air conditioning
failed, once for a push/pull to retreat from an early CMOS machine,
which had more CP's than MIP's ;-), back to a Bi Polar machine, and never
had a problem.

Coming up just be sure you sequence everything properly, peripherals first,
disk, terminal controllers, network boxes, front ends first, then the
mainframes.  Let each of the devices go through their self-checking
sequencing gradually, a few at a time.

Make sure everything is up before you bring up the mainframe.
The take down is in the opposite order, mainframe first then the
peripherals.


On Thu, Jun 17, 2010 at 12:26 PM, Pinnacle pinnc...@rochester.rr.comwrote:

 - Original Message - From: Matan Cohen matancohen...@gmail.com
 Newsgroups: bit.listserv.ibm-main
 Sent: Thursday, June 17, 2010 8:07 AM
 Subject: taking down the machine - z9 series


 Hi,
 When the situation force you to taking down the machine (due to
 Electricity
 power cut) , after taking down the lpars.
 do you perform anything else beside deactivation of the CPC ?
 i met a diffrent opinion in this matter .


 --
 best regards,
 matan cohen
 MF System Administrator.


 Matan,

 A full power-down can be problematic.  I would recommend that you spend the
 extra money to get an IBM FE on site to ensure that all machines are powered
 down correctly.  Most sites I work at haven't powered down in years, so they
 do not know the procedures.  Also, your older equipment may go belly up just
 from the power off, power on process.  I once had to move 6 3174
 controllers, and 3 of the power supplies and one of the diskette drives
 failed on startup.

 Good luck,
 Tom Conley
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-- 
George Henke
(C) 845 401 5614

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Re: taking down the machine - z9 series

2010-06-17 Thread R.S.

W dniu 2010-06-17 18:26, Pinnacle pisze:

- Original Message - From: Matan Cohen matancohen...@gmail.com
Newsgroups: bit.listserv.ibm-main
Sent: Thursday, June 17, 2010 8:07 AM
Subject: taking down the machine - z9 series



Hi,
When the situation force you to taking down the machine (due to
Electricity
power cut) , after taking down the lpars.
do you perform anything else beside deactivation of the CPC ?
i met a diffrent opinion in this matter .


--
best regards,
matan cohen
MF System Administrator.



Matan,

A full power-down can be problematic. I would recommend that you spend
the extra money to get an IBM FE on site to ensure that all machines are
powered down correctly. Most sites I work at haven't powered down in
years, so they do not know the procedures. Also, your older equipment
may go belly up just from the power off, power on process. I once had to
move 6 3174 controllers, and 3 of the power supplies and one of the
diskette drives failed on startup.


This is the reason for having procedures. You have to know how to power 
down and power up (more important) your equipment. Yes, it could happen 
that some equipment would fail during the excercise, but it could fail 
everytime - you should be prepared for such case as well. Regarding 
3174's - yes those machines can work for years, but IML means reading 
diskettes (assumed no HDD version) and this is the most error prone 
process. I remember the night when I had to fix 3174 with soldering gun. 
And butter from operator's sandwich to lubricate some fan. g


BTW: last time I ordered IBM engineer assist (many years ago) he was the 
only reason of serious problems.

--
Radoslaw Skorupka
Lodz, Poland


--
BRE Bank SA
ul. Senatorska 18
00-950 Warszawa
www.brebank.pl

Sd Rejonowy dla m. st. Warszawy 
XII Wydzia Gospodarczy Krajowego Rejestru Sdowego, 
nr rejestru przedsibiorców KRS 025237

NIP: 526-021-50-88
Wedug stanu na dzie 01.01.2009 r. kapita zakadowy BRE Banku SA (w caoci 
wpacony) wynosi 118.763.528 zotych. W zwizku z realizacj warunkowego 
podwyszenia kapitau zakadowego, na podstawie uchway XXI WZ z dnia 16 marca 
2008r., oraz uchway XVI NWZ z dnia 27 padziernika 2008r., moe ulec 
podwyszeniu do kwoty 123.763.528 z. Akcje w podwyszonym kapitale zakadowym 
BRE Banku SA bd w caoci opacone.

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Re: taking down the machine - z9 series

2010-06-17 Thread Timothy Sipples
Hal Merritt writes:
If you have any Os/2 based appliances, then you'd want to
gracefully shut them down. Otherwise, they will run CHKDSK
upon power up, and that takes forever. Examples of OS/2 based
appliances include the older HMC's, 2074's, etc. Not sure if
you can do that for the OS/2 based SE's, but, if you can, not
a bad idea IMHO. (I believe the SE's and HMC are all Linux
based on the z/9's. Linux recovery is fast enough to be left
alone.)

This is a bit of a digression

I agree with the advice to shut down gracefully if possible. But there were
always ways to reduce CHKDSK running time at bootup.

CHKDSK could run for a long time, yes, but the amount of time is
proportional to the size of Drive C, the boot volume (in particular). When
hard disks were small this wasn't an issue. When hard disks got much
larger, then partitioning made sense to help mitigate the problem. (And you
can always just create one small partition on a large hard drive, leaving
the rest unallocated.) Also, there's a CONFIG.SYS file setting to control
which (other) partitions get CHKDSKed at bootup if left dirty. With that
CONFIG.SYS setting it's possible to defer CHKDSK of other partitions until
after bootup, after the most essential data is checked.

The problem was definitely solved with JFS, a journaling file system which
IBM added to OS/2 starting with Warp Server for e-business then soon after
in the OS/2 Warp client. CHKDSK races through JFS very quickly. Initially
OS/2 would not boot from a JFS volume, so there'd always be a small FAT or
(preferably) HPFS partition to boot OS/2 (with a fast CHKDSK time). Then
you could have the rest of the disk storage formatted as JFS. Nowadays
eComStation has eliminated that FAT/HPFS boot partition requirement -- it's
now possible to boot eComStation from JFS.

By the way, a full OS/2 shutdown is the most graceful, but Ctrl-Alt-Del
(followed by cutting the power after the PC BIOS screen appears) was better
than just hitting the power switch. Ctrl-Alt-Del didn't give applications
the opportunity to perform their own shutdown housekeeping, but it did
flush OS/2's disk buffers, close all files, and mark the partitions as
clean.

- - - - -
Timothy Sipples
Resident Architect (Based in Singapore)
STG Value Creation and Complex Deals Team
IBM Growth Markets
E-Mail: timothy.sipp...@us.ibm.com
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