I probably should clarify my statement about changing the oil...
They obviously have had to replace batteries, and do other routine
maintenance, similar to a car, but, anyway, hopefully you get the idea.

On Tue, Jul 19, 2011 at 1:33 PM, John Thompson <jthompson...@gmail.com>wrote:

> Some thoughts...
> Depending on your budget, there is always the option of a "properly
> installed generator" that will pair with and charge your ups batteries.
>  There are electricians and companies who can do this for you.
> http://www.cumminsonan.com/cm/products/propane
> http://www.nstpower.com/index.html
> We have had good luck with an onan propane generator over the past 10 years
> or so.  Literally, all they've done to it is change the oil in the thing,
> and crank it once a month for 10 years.
> First the UPS kicks in, then while the server is running on batteries, the
> generator fires up and relieves the batteries, while the UPS and some other
> devices regulate the power.
> Of course, if you have 10 users and a budget of a few thousand a year, I'm
> guessing that would not be a good option for you.  We have over 300 users
> and are running on AIX.
> Otherwise, I think those other options given by previous posters are your
> best bet:
> 1) Find a way to make the UPS "gracefully" shutdown your Universe server
> (along with Universe)  I know APC has quite a bit of Windows based software
> along these lines for fairly cheap.
> 2) Virtualize the server and use some of those features.  Don't expect
> Hyper-V to do it for you without a lot of third party help.
> On Tue, Jul 19, 2011 at 12:27 PM, Wols Lists <antli...@youngman.org.uk>wrote:
>> On 19/07/11 16:30, Arnold Bosch wrote:
>> > Hi
>> >
>> > Has anybody ever tested how Universe behaves if the server is hibernated
>> > to disk ?  Does it work and resume locally logged on sessions properly
>> > when the server is brought back up again?
>> > Obviously all network sessions will be aborted, but I'm not concerned
>> > about that.
>> What's doing the hibernate? Do you mean like a laptop suspend?
>> My first thought was you meant suspending a VM, but it doesn't read
>> quite like that to me.
>> Having been following this with the linux kernel (yes, that's not
>> Windows, I know), if you mean suspending a VM of some sort, yes the
>> system should just resume with minimal problems and carry on as if
>> nothing has happened. I run XP in a VM on linux, and rarely have
>> problems even though things like "My Documents" etc are on a (from
>> XP's point of view) network disk.
>> If, however, you really mean "hibernate", with Windows flushing *itself*
>> to disk, that's hard to get right. You also said "without a proper
>> shutdown", implying that it didn't hibernate, but crashed.
>> Basically, unless it's totally controlled like saving a VM, I'd be very
>> wary of something that "may have saved" itself after a power failure.
>> Sounds like it might be worth investing in a checkpointing file store -
>> checkpoint before overnight processing, then catch-up afterwards. If
>> you've got a mirror you can break, you could break the mirror and back
>> up one copy while the other copy is updating, before you resume the
>> mirror.
>> Cheers,
>> Wol
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> --
> John Thompson

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