[Server-devel] Server-devel Digest, Vol 76, Issue 21

[Tony Anderson]

Hi,

My point about the UPS is that an off-grid setup doesn't need one which
somewhat offsets the additional cost of supporting a hard drive.

Currently the two schools in Lesotho are using MSI Nettop as school 
servers. In the context of charging 30-100 XOs, the additional power 
consumed by the school server is negligible.

However, at the second school which charges the laptops using individual 
solar panels, the school server takes a dedicated solar panel charging a 
pair of car batteries.

The big surprise was that the MSI does not boot on 12vdc. This required
adding an inverter (designed to charge laptops from a car battery).

I was hoping the Trim-Slice H would be suitable. I am concerned with its 
fixed 1GB memory. The Utilite looked like a promising alternative, but 
supports only SSD. We may have to wait for nettops based on the new
Atom technology for a one-box solution. In the meantime, the current 
Atom based systems are doable in an off-grid deployment.

By the way, the need for the school server is closer to 50 hours per 
week than 24/7. Normally it needs to be booted only during the hours 
when children are in school.

Tony

On 08/17/2013 06:21 AM, Jerry Vonau wrote:
> On Sat, 2013-08-17 at 05:49 +0200, Tony Anderson wrote:
>> >Hi,
>> >
>> >What is the disk capacity required by internet-in-a-box?
>> >
> 600-700 gigs
>
>> >The purpose of the server is to deliver the information not available
>> >from the internet.
>> >
> Yup, or when your offline.
>
>> >The cost of a UPS which is required for a system on the grid is $80-100.
>> >
> Think the issue is mainly about off-grid systems, those are usually 12v.
> What would be neat is if there was a power supply that you could replace
> in your standard PC that used 12v as the supply voltage. Anybody know of
> a manufacture that supplies one? I'd hate to see what the size of the
> battery pack and the recharging requirements needed of the
> solar/wind/<insert others> recharging system that would be needed to run
> such a beast.
>
>> >In my experience, there is need for one school server at a school
>> >supporting 30-200 XOs.
> Know of any low power devices that you might recommend for off-grid use?
>
> Jerry
>