Re: HMC Question

[Mark Phippard <MarkP@xxxxxxxxxxxxxxx>]

Thanks Larry.  That is what I had thought too.  Looking at the rack and 
the cables it just looked like the wall power (220) was going into the 
PDU, maybe it is, so we started to doubt it.

I couldn't understand why power wouldn't go through the UPS.

We will probably just put our existing UPS's on top of the rack to power 
the xSeries and keep it simple.

Mark


midrange-l-bounces@xxxxxxxxxxxx wrote on 08/18/2004 04:45:20 PM:

> Mark,
> 
>   It's actually:
> 
>     Wall - > UPS - > PDU - > All your stuff.  Optionally you can also 
> plug some of your stuff directly into the UPS if you'd like. 
> 
>     As for capacity you need to 'do the math' again and total up all the 

> requirements of the servers, HMC, etc to find out if it's got enough 
> juice. Plan B is to plug it all in and see if the magic smoke comes 
> out.  I don't think that would make Cole happy though!!
> 
>    - Larry
> 
> Mark Phippard wrote:
> 
> >midrange-l-bounces@xxxxxxxxxxxx wrote on 08/18/2004 03:42:55 PM:
> >
> > 
> >
> >>  The PDU in the rack should also work with xSeries machines though if 

> >>you get redundant power on the x boxes and only have one PDU you'll 
> >>rapidly run out of plugs.  Each PDU only supports about 6 connections 
so 
> >> 
> >>
> >
> > 
> >
> >>'do the math'.
> >>
> >> 
> >>
> >
> >Correct me if I am wrong.  Power comes from the wall into the PDU.  The 

> >UPS (9910-P33) is connected to the PDU, and the iSeries and HMC are 
> >connected to the UPS.  Stuff like the external DVD can be connected to 
the 
> >PDU.
> >
> >So here is my questions, for our 3 xSeries servers, does the UPS have 
> >enough juice to take all of those, plus our iSeries and HMC or would we 

> >want a second rack-mount UPS to power the xSeries servers?  In this 
> >scenario, the PDU would seem to have enough plugs since it is really 
just 
> >the UPS that is plugged into it.
> >
> >Thanks
> >
> >Mark
> >
> >
> >ange.com/midrange-l.
> >
> > 
> >
> 
> -- 
> Larry Bolhuis                   IBM eServer Certified Systems Expert:
> Vice President                    iSeries Technical Solutions V5R2
> Arbor Solutions, Inc.             iSeries LPAR Technical Solutions V5R2
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> Solutions V5R2
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> 
>   If you can read this, thank a teacher....and since it's in English, 
> thank a soldier.
> 
> 
> 
> 
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