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Date:      Wed, 16 Oct 2013 10:44:52 -1000
From:      Al Plant <>
To:        Erich Dollansky <>
Cc:        Frank Leonhardt <>, yudi v <>,
Subject:   Re: UPS buying suggestion
Message-ID:  <>
In-Reply-To: <>
References:  <> <> <> <>

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Erich Dollansky wrote:
> Hi,
> On Wed, 16 Oct 2013 12:35:32 +1000
> yudi v <> wrote:
>>>   APC BackUPS Pro 420 to keep three HP microservers alive. What!?
>>> Yes, it works. The power they draw varies greatly depending on what
>>> type and how many drives you have in the bays and (I think with the
>>> Microservers) their processing workload.
>> Nice to know you got 3  servers running off a 420 VA unit,
>> surprising it can handle 3 units when the power goes off.
> it is caused by the good design of the server's power supply unit.
>> how do I tell what type of battery an UPS takes?
> APC tells you to use theirs. But you can take the battery out and ask a
> battery dealer if there is a replavement available.
>> I am also looking at APC Smart-UPS SC 420VA
>> 230V<>,
> This sounds like a perfect deal if the price is well below USD 200.
>> within my budget, it's got AVR, and user replaceable battery, but
>> cannot tell whether it accepts a generic one.
> It will be possible in a private environment to use the battery of the
> same type which is a bit smaller in size. The connectors seem to be
> standard connectors.
> Your URL shows the two battery types the UPS works with. Ask a search
> engine if there are compatible batteries available. This is the case
> for many APS models I know.
> Erich
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I have 4 battery backups that I think are the older big brother of the 
one that Eric is using. APC 900. I have replaced the batteries with 
external Stationary Batteries. (Look like truck batteries, but have 
small bolt on connections for backup systems.) I have them hooked up in 
a cage beside the backups  in my shed. I have used the backups for up to 
10 hours of uptime as a test.

Here in Hawaii on Oahu island where I live, power outages are common. 
Many people have installed solar now since a car hitting an electric 
pole is almost a daily problem. As is a contractor digging and breaking 
cables. Corroded fuses blowing on power line transformers are also a 
major problem on any Pacific island. One of my clients went down for 7 
hours during the busy time last week for business. They do have backup 
for gracefully shutting down computers that lasts about 30 minutes, so 
they can get the customers cashed out with their purchases,

~Al Plant - Honolulu, Hawaii -  Phone:  808-284-2740
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"All that's really worth doing is what we do for others."- Lewis Carrol

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