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I'm having a hard time finding KVA or the specs that would let me know
something is low end.

Just messing around on newegg, I found this one:


http://www.newegg.com/Product/Product.aspx?Item=N82E16842102048

Lots of good reviews.. for Windows machines mainly, though.

Bradley V. Stone
BVSTools - www.bvstools.com
eRPG SDK - www.erpgsdk.com

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx]On Behalf Of Larry Bolhuis
Sent: Sunday, September 09, 2007 3:50 PM
To: Midrange Systems Technical Discussion
Subject: Re: Now I'm Buying my first i5. :)


Brad,

OK Several answers here to some points raised.

First, I like Tripp-Lite. Their stuff has worked flawlessly for all the
stuff at Frankeni.com Not only are they an official sponsor of
Frankeni.com they are also a System i user.

Second: Amps isn't the important number, KVA is. Since all the smaller
i5s (basically up though the 4 way systems) can run on pretty much
anything from 100 volts up to 240 volts, the amps will vary depending on
the input voltage. Ohms law however tells us that the KVA will be the
same no matter what the voltage. Also be careful of the temptation to go
straight to watts because that doesn't take into account Power Factor.

Second. the thing about surge protection and such is important ut it
depends on the type of UPS. The true on-line variety automatically
includes surge protection because it takess the AC to DC and back to AC
constantly. Not surprisingly this type of UPS also handles drops and
surges the best of any type. A third attribute of this type of UPS is
that they are almost universally generator friendly.

Very small UPSs are typically 'stand-by' meaning that they pass the line
voltage through to the load 99.97% of the time and only provide power
from battery when the utlity fails. These low end units are almost NEVER
generator friendly and trying it will almost certainly fail.

Units between the true on-line type and the stand by type may have the
ability to 'boost' voltage when there are sags (brown outs) and block
surges with surge suppression. They may or may not be able to run on a
generator, check with the manufacturer.

Fourth. What happens when yo have no UPS and your development system
drops like a stone in a power outage. Usually nothing. Your disk cache
is battery backed up and the database will recover back tot he previous
transaction. OK If you are editing with SEU (shame on you) you MAY lose
your changes but probably not. So it's not a huge risk really but it
does save that IPL time...

- Larry


Bradley V. Stone wrote:
In the process of finalizing my purchase of a 515 through the
development
lease program. I decided on purchasing outright instead of leasing.

In talking with a collegue, he's mentioning I should have a UPS
with a power
conditioner.

Now, not wanting to spend another couple grand on something
like that, what
specs should I be looking for in a UPS? Lets say the power goes out at
night and I don't wake up. Battery on UPS dies and I don't do a "nice
shutdown" anyhow. I can see it being useful for power flickers which
happens during t-storms here often.. or ice storms.

As far as the power conditioner, is that necessary? Never used
one before
on any of my PCs.

Just looking for advice on what I need to look for in a UPS, and a good
place to get one. Sams? Best Buy? Office MAx? Online? NewEgg?

Thanks!

Bradley V. Stone
BVSTools - www.bvstools.com
eRPG SDK - www.erpgsdk.com




--

Larry Bolhuis IBM Certified Advanced Technical Expert - System i Solutions
Vice President IBM Certified Systems Expert:
Arbor Solutions, Inc. System i Technical Design and Implementation V5R4
1345 Monroe NW Suite 259 eServer i5 iSeries LPAR Technical Solutions, V5R3
Grand Rapids, MI 49505 IBM Certified Specialist
System i Integration with BladeCenter and System x V1
(616) 451-2500 System i IT Simplification: Linux Technical V5R4
(616) 451-2571 - Fax iSeries System Administrator for OS/400 V5R3
(616) 260-4746 - Cell

If you can read this, thank a teacher....and since it's in English,
thank a soldier.


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