Andy Smith wrote:
> Hi Anton,
>
> On Sun, May 31, 2009 at 07:09:17PM +0100, Anton Piatek wrote:
>> 2009/5/31 Andy Smith <andy@???>:
>> > I still would like to see some sort of P2P backup thingy where it
>> > split all your chosen files into blocks, encrypted them and then
>> > stored copies of them "in the cloud," maintaining a certain level of
>> > copies at all times.
>>
>> I have seen several of these - if only I could remember the names of them.
>>
>> The idea being that you get together with either a group of friends,
>> or just join an existing pool and you allocate a certain amount of
>> your disk to other people's backups and it cloud-backups your data.
>
> Yes, exactly. I was thinking that you could ensure a certain number
> of your blocks were backed up remotely by adding nodes to the cloud
> which are only allowed to backup your stuff. That way it would not
> actually be a waste to put another machine somewhere else, yet still
> participate.
>
>> The amount of space required on my disks to backup a enough
>> friend's data to make it worthwhile means that its cheaper for me to
>> buy disks to stick in a machine at my parent's house (as opposed to
>> having 200G of someone elses data at my house).
>
> For me I am not sure it is worth it. I have about 400G of data I
> want stored remotely. Most of it is of low priority and I'd be happy
> enough to have 1 copy of it elsewhere. Some of it, I would like to
> see 3 or 4 copies online at all times (probably by providing one of
> those mirrors myself).
>
> The issue is that I can't really run 400G of storage remotely for a
> reasonable fee. I think it is way cheaper for me to add 1T of
> storage to a system I already have in my home, than convince someone
> to host a computer with 500G of storage elsewhere. Smart people are
> concerned with power consumption and bandwidth use.
>
>> The problem will be that I have 200G of data to backup, but don't
>> really want to store 200G+ of someone elses data. If I only offer 50G
>> of my disk, and everyone else thought the same, then you would never
>> get enough data as you lose some (probably a lot if you want access to
>> it without requiring a large amount of the pool online) capacity
>> trying to make it redundant.
>
> In theory I'd be happy to add 1T of storage to my home systems and
> give 500G of it to mirroring stuff for people on the Internet, with
> a bandwidth throttle, if that meant that people on the Internet
> would mirror 500G of stuff for me.
>
> I think that would work out cheaper than building a system with 500G
> of disk in it and paying someone to host it for me with the
> attendant power and bandwidth concerns.
>
> I could investigate doing a swap with someone else who wants 500G of
> offsite storage, but I can't realistically fit another machine in
> this house.
>
The partnership Open Source project I have been building for a number of
years attempts to encapsulate much of the ideas descibed in this post in
software (Perl).
Since last week the tangible thing to download now works, it is deployable,
upgradeable and secure. There are many more features in the pipeline aimed to
make this a easy experience. I have a reference install (and would really
like more and don't mind who does, HE, FE, SME etc) and there is a devel list
to help the community get going - feel free to join, for general discussion
too.
I have not used the term cloud in my docs but yes, cloud is a term that is in
context but I'd prefer to use the term 'private clouds' - the owner has
complete control over security and more. The community technology of DIASER,
that is where people can join their pools, is also being seriously considered
but the priority now is to ensure the features required for the first stage
are strong. Much more info below... and on diap.org.uk...
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