[tahoe-dev] Tahoe as cloud back end for a local application

[Eugen Leitl]

On Tue, Feb 21, 2012 at 10:21:59AM +0100, Eugen Leitl wrote:
> 
> I'm investigating porting an Apache/PHP/MySQL application currently
> using local storage to use a private Tahoe grid (servers with public
> IPs) as the backend. Total storage size is about 10 TBytes,
> using about a million files. The application would typically
> run on local LAN behind NAT.
> 
> Question: how many servers would one need to make this reliable?
> How much storage should each server contribute for good performance? 
> How slow would access to such files be (user queries local
> DB via a http front end, then retrieves the hits from the cloud),
> all assuming fast servers on the public Internet? Under 10 seconds,
> over 10 seconds?

Oh, one thing I forgot: the data in the cloud is to be read-only for 
application users. It is r/w to the administrator group.