Re: cache battery expiration

[Jerry Draper <midrangel@xxxxxxxxxxxxx>]

1.  YES
2.  Likely (I wasn't there)
3.  Unknown
4.  Unknown

J

On 12/12/2013 2:11 PM, broehmer@xxxxxxxxxxxxxxx wrote:
> Whats not understood is:
> 1. Did the CE replace the battery pack.  (assume yes)
> 2. Did the battery stay separated from the card for at least 2 minutes.
> (?)
> 3. Does the card require a Start IOA or does it reset itself when
> separated for 2 min. (?)
> 4. Would it hurt do a Start IOA. (This is not something I would want to do
> unless I could get IBM to say it would work).
>
> Again, I've only done this a dozen times with no issues so Larry should
> know about the specifics (hopefully).
>
>
>
>
>
> From:   Jerry Draper <midrangel@xxxxxxxxxxxxx>
> To:     Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
> Date:   12/12/2013 03:53 PM
> Subject:        Re: cache battery expiration
> Sent by:        midrange-l-bounces@xxxxxxxxxxxx
>
>
>
> Again then back to my original question.
>
> Is the timer reset when the IOA detects that the battery pack was
> removed for 15sec/2min or is the timer reset manually by the CE?
>
> Jerry
>
> PS:  Slightly unrelated but......in order for a 720 to "sense" that a
> UPS cable has been plugged into the back of the machine all AC power
> must be removed from the machine fro at least three minutes.
>
> J
>
> On 12/12/2013 1:18 PM, broehmer@xxxxxxxxxxxxxxx wrote:
> > I can't even think about arguing with that.  2 min. seems like best
> > practice to me.  The IBM document I looked
> > at said at least 15 seconds but it's from the v5r2 infocenter document
> for
> > 2748 to 5708 cards.
> >
> > Note: When replacing the cache battery pack, the battery must be
> > disconnected for at least 15 seconds before connecting the new battery.
> > This is the minimum amount of time needed for the card to recognize that
> > the battery has been replaced.
> >
> >
> >
> >
> >
> >
> >
> >
> > From:   DrFranken <midrange@xxxxxxxxxxxx>
> > To:     Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
> > Date:   12/12/2013 03:07 PM
> > Subject:        Re: cache battery expiration
> > Sent by:        midrange-l-bounces@xxxxxxxxxxxx
> >
> >
> >
> > I have a document .... somewhere ..... that says 2 minutes. As far as I
> > recall it was for all batteries.  The IOA needs to see that there is no
> > battery attached. I do know if I follow the 2 minute rule I've never
> > been burned. :-)
> >
> >            - Larry "DrFranken" Bolhuis
> >
> > www.frankeni.com
> > www.iDevCloud.com
> > www.iInTheCloud.com
> >
> > On 12/12/2013 3:42 PM, broehmer@xxxxxxxxxxxxxxx wrote:
> >
> > > Larry, I'm curious.
> > > Where did you get the 2 minute requisite power off?
> > > Everything I read seem to say 15 seconds.  Is that
> > > something new or only for 520's?
> > > I thought once the start IOA was done it would reset.
> > > Again, learning something new and want to know.
> > >
> > > Thanks
> > >
> > >
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