[volunteergrid2-l] New Member

Sun Oct 9 11:41:36 PDT 2011

Hi Chris,

I am not really part of VG2, but I believe I could give you comment.

Availability is critical, but it seems you won't have this problem. From
what I've heard average upload speed is around 100 KB/s, so don't worry
about your bandwidth. For storing 60 GB you should share at least 200 GB in
3-10 settings. I believe suggested share volume is between 500 GB up to 1 TB
(not above).

That's what I heard, you better wait for someone's more competent answer.
Vlastimil

On Fri, Oct 7, 2011 at 21:36, Christoph Langguth
<christoph at rosenkeller.org>wrote:

> Hi folks,
>
> first off, thanks for having set up this project and for accepting me into
> it! :-)
>
> So here's a bit about myself: I'm administering the server of a student's
> club in Jena, Germany (rosenkeller.org). We are essentially self-hosted --
> we have our own physical Linux machine acting as WWW and mail server, and as
> a gateway for the internal machines. Thankfully, we're connected directly to
> the University network with Gigabit Ethernet, and all of that with no cost
> for us (University maintains the infrastructure) :-)
>
> So that little server is essentially where almost all of the pretty
> important data is -- like our web presence, and "professional" and personal
> mails and files of our staff and members.
>
> The main reason for applying here is backup provisioning. While we do make
> local backups through backuppc, we don't really have a working solution
> which would survive a catastrophic event (like the office burning down).
> Offsite backup is always a good idea, but we simply can't really afford
> commercial solutions. Well, we probably could if I insisted really hard that
> backups actually are important and worth the "insurance" fee, but hey:
>
> - a "social" distributed storage where we get the benefits for free and can
> offer the same for other people is just more inline with my personal point
> of view
> - it's easier if "management" is not involved in these things, so it's more
> hassle-free for me as well if I can provide a working solution without much
> "organizational" overhead (managing bills etc.)
> - finally, it's simply fun to get into new technologies :-)
>
> When I said we don't have a working solution, I actually cheated a bit: we
> do have a solution based on wuala ( http://wuala.com ). This worked pretty
> well until a few days ago, when they announced that their storage trading
> would not be supported anymore. If you're interested, here's the (mostly
> disappointed) feedback from affected users: https://forum.wuala.com/**
> viewtopic.php?f=39&t=2231<https://forum.wuala.com/viewtopic.php?f=39&t=2231>. I am one of the many users who think that that decision was made more
> because of strategic than technical reasons (LaCie bought wuala some time
> ago...), but that is speculation and convincing responses from the
> developers are scarce.
>
> It is actually in that forum that I learned about Tahoe LAFS. I was
> intrigued, so I just installed it and tried it out with my own little
> "infrastructure". It looked promising, but obviously, a local infrastructure
> is not terribly useful if the goal is off-site storage. So this is how I
> ended up finding VG2 and thinking it's just the right thing to do, so here I
> am :-)
>
> Now that you know where I'm trying to go, here's a little summary of how I
> intend to contribute:
>
> - Server machine is up 24/7 (well, at least it should, unless Murphy's law
> strikes)
> - Connectivity is Gigabit Ethernet, so both up- and downloads should
> normally work decently fast :-)
>
> There are a few open questions left, most of which I'll probably bug you
> with in subsequent mails (like what is the best strategy for backing up
> etc). One thing probably needs to be sorted out first though, so here it
> goes straight away: The volume that we need to back up is not terribly high,
> at the moment it's around 60 GB for a full backup, and I expect it to grow
> only slowly.
>
> At the moment, we only have one internal disk (500 GB), of which some 250GB
> are free. Of course, even for local backups a second disk is required, and
> the same would go for the storage provided to tahoe. Therefore, we intend to
> buy an additional disk for that purpose. If I'm not mistaken, you have a
> requirement of 1TB or more -- is that still up-to-date? From my point of
> view, the most sensible thing would be to buy a 1.5TB or 2TB disk, and use
> it as the target both for local backups, and for tahoe. Subtracting local
> backups, this should leave (at least) around 1 or 1.5 TB for tahoe.
>
> It will probably still take a few weeks until everything will be set up
> here, and there most probably will be a few round trips with questions I
> have, but for starters -- do you think the above makes sense? Do you have
> any particular hints or comments?
>
> Cheers,
> Chris
>
>
>
>
>
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