Yes, and yes.  There's been confirmation of running 7 non-overclocked S3's on one dps-2000, which isn't recommended but possible. However 6 is stable.  It is a little less efficient and obviously more heat is generated at that load but theres no issues.

I can't comment on over clocking all 6 on the same PSU as I haven't done it personally but it should be feasible.

You're probably close but it's a little less than that.  Remember there's really only the hashboards and control board - none of the brackets on the ends go in, there's half the fans total, and there's no outer metal shell anymore.  Each hashboard case fits 6 Ants.  The case itself is extremely light, at least this prototype one, because it's only .30 thickness.  If these make it to production it'll be double that so there'll be some structural rigidity, and then I'd agree the case would be 10-15 on its own.

Seat of the pants feel from actually carrying it around and getting it situated in the rack, I'd say it's probably about 45 lbs for the hashboard case fully populated, and about 20-25 lbs for the PSU case.  If I get a chance to weigh it on a scale when I move it to another rack in a week or so I will.

It's a nice thought, but honestly, there's really nowhere to fit one of these inside the case.  Plus then you also have to worry about the brick transformer and/or customizing a 12v plug for it from somewhere else.

Really the only way this is usefully done is to have the cabling done the way it is.  There's enough room on the outside of the case if you wanted to surface mount one and go that route, but trying to find enough room inside, especially without it impeding airflow (most of the challenge), is quite tough.

The hash case with the Delta fans has the miners running in the mid 30's temp wise.  The stock Bitmain fans are running in the upper 40's, a couple units are around 60, so the Delta fans are certainly much better.  However, they are MUCH louder.  Thankfully this is in a datacenter environment so it fits right in and you expect the noise.

The PSU case with all 4 power supplies is running very cool to the touch.  There seems to be no issue with the 4th PSU in the back suffering from all the rest of the hot air from the first 3 moving through it.  Now these PSU's are half-loaded, only 3 miners per PSU at the moment, so we'll see when I can get them set with a full compliment of 6 miners per PSU whether heat becomes an issue.  But with the volume of air that's being pushed through I still doubt it'll be an issue.

And here's some pics of the final setup all rackmounted and humming along nicely.

Cabling is a little messy and they're not properly mounted on rails like they should be, just on rack shelves.

If you want to do a straight trade, that'd be fine.  Just PM me your shipping address and I'll pay this way, you pay the return shipping of the dps2k... good?

I can send you what you need, I recently upgraded from the 750's, so I have a ton of PSU's and boards sitting on a shelf.  If you want to send me a pre-paid shipping label for USPS, UPS, or fedex I can have it out in the mail tomorrow.

Ahh, ok I see what you mean.  I would suppose though that it should be doable to keep track of that info as well, especially if there's a database backend that could be utilized to keep track of that info which could be replicated across the nodes when the user is initially setup.  But then again, it does appear you can mine anonymously on the nodes by using your miner address, so I could assume that doing it that way would remove that dependency, right?

If I saw correctly you seem to have an idea already about merging the two ideas... if you find a way to introduce a method of communication between running ckpools, you are in effect creating a p2pool out of ckpools.  Or am I misreading what was in your other main discussion thread?

Honestly if that is the answer to solving the share diff issue, then there might certainly be room to work with in merging the best principles and interfaces of p2pool to run on top of a well built pool foundation that you've created with ckpool.

The main reason I like p2pool is that I have enough hashrate where running a local node is really beneficial.  I'd very much consider running a local ckpool instance, but it's not enough hash to find anything on my own since it's an isolated pool.  By connecting into the p2pool network I get the combined hashrate which finds blocks at a decent clip.

Wow, was just reading that thread... first, congrats CK on the launch, it looks very nice.

Hmm... now if only there was a way to combine a properly written pool implementation that is written in a language that understands performance and multihreading, with a concept that peers together a number of nodes to form a de-centralized network of stand-alone miners large and small.... now that would be something......

Heh, unobtrusive is one thing, not being able to see it is another....

Ads can be annoying, but on the other hand, they serve a very useful purpose both for the advertiser and the receiver.  If I were "paying" for that spot, I'd certainly want to be able to have it seen easily.

No worries tho, there's probably enough time to play around with it and come to a good solution.

Nice!

One comment tho - the yellow on white is a little hard to read, not exactly very easy on the eyes.  I'd either make the background a light grey or something to be able to better contrast the yellow, or change the yellow text to something with a little more contrast - dark grey, dark blue, etc.

Edit - OK, two comments...

The 3 areas you can go to from the main "learn and participate" page - when you follow the links, I don't think they're very intuitive on how to navigate.  The "X" at the top right doesn't really stand out as the way to get back to where you were.  If you don't see that (I didn't really notice it on my first try), and you hit back in your browser, it doesn't take you back to the main p2pool.org page, it goes to your last absolute browser page, which for me in chrome is my start page.

I would make a suggestion to either 1) carry the main p2ool page header onto those pages as well so you can easily go back to any of the others or 2) make the page a true "pop-out" or "floater" page where it is or looks like it's in its own box, with the "x" displayed in the top right corner of the box in a bubble (like you see on many other sites) so you can close out that page and return to the main page you were previously looking at.  Or, maybe to start you could move the yellow "nav button bar" from the bottom of the page, and put that in place of that large "X" in the top right.  At least people will see that immediately and then can clik on that, rather than have to scroll down to see it, it might not be normally displayed unless you're on an uber-large resolution setting.

Edit #2 - Ok, one more comment...

The main page, at the bottom, you have a spot for a sponsored advertisement.  Depending on the size of the browser window it gets cut off at the bottom and you can't see the whole area.  I'm at 1900x1200 and my browser window is usually somewhere around 1400x900 resolution size, so decently large, but not full screen.  You have to scroll down to see it all, so if you really want that space to be useful I think you're going to have to float it somewhere in the main image area, or maybe make it a top- or side-mounted ad space bar.

I think I'm done now... really... I hope....

Why need it?  There's no login functionaltiy, so no usernames or passwords to be transmitted in clear text, there's no purchasing or financial data, it's just an informational website.  No need to spend the several hundred bucks on an SSL certificate when you don't need to.

Oooh I second this question - I'd love to find a way to be able to do this via script.  I have scripts that push out the pool configs and other things, and the ability to do firmware via scp and ssh commands would be awesome.

Actually that might work, gut it and you might have something there...

I will certainly agree with you there, the S3's are for sure quieter and it seems a little cooler.  Honestly it seems the open S1 frame is cool, but heat just flows everywhere out of it.  With the covering on the S3 it tunnels it better through the boards and out the back, at least better directing the airflow.

No, they are supposed to bolt up right to the same frame structure as the S1, reusing it.  Honestly it shouldn't be any worse without the enclosure around it if you have proper airflow.

As for an enclosure, I'm working with another member on a rackmountable chassis to hold a few S3's (you can find the initial thread I think under group buys a month or two back).  Hopefully the first prototype will be delivered in about a week, and the idea is to fit 12 S3's worth of blades and server PSU's in about 10U of rack space.  If you PM me I'll get some pics of it to you when done (I won't want to search through pages of this thread in a couple weeks to find you...  )

You don't need an "EVGA Platinum".  You need a good, high efficiency server power supply, and you for sure don't need 1500w to power 2TH.  A server class PSU will beat the pants off of any consumer model at any time.

You will get higher efficiency out of a server-class PSU, and even better if you're running on 240v instead of 120.  Take a look at the SPTech specs for their servers, and do the math to see what they're pulling, and they're doing it at 90+ efficiency.  The one thing I'll give SPTech is that they are built well, using (supposedly) higher end server grade parts.

By undervolting you achieve several different things.  Yes, you lower your hashrate, but you also lower power draw significantly, lower heat generation, and raise efficiency which allow you to get higher numbers with much more stability.  The ASIC chips themselves are cheap, they're only "wasting" a few bucks by having to add a few more when undervolted.  Seriously an extra hashboard to them is probably $50, so when you're dealing with a $1000 server that's really not much at all.

I disagree here, simply because the S4 has something the S3 does not do easily - it plugs right in, you don't need to go through the external PSU and wire mess jungle.  That is for sure worth something a little extra, probably easily another .3-.4 BTC.

For those with access to a server room of some sort, this is a very attractive unit because it fits nicely in any standard rack and looks the part.

I think it'll be around 3 BTC.  If the specs are 2.2TH, then that's about 5 S3's which will run you over 3BTC when you factor in PSU costs.

The SP20 is equivalent to the S3 in all aspects.  I don't know why SPTech would release that unit, at that hashrate, at that delayed timeframe because it's no better than an S3 which is shipping today.  Waiting another 6 weeks for something I can get next week (new), or now (used)?  No thanks.

I'm going to assume the S4 will be better than the SP20, and arrive sooner.  It should follow the same upgrade path just like the S1 -> S3.  Meaning, it should just about double the hashrate for the same wattage, which will mean 2th/s at 1100w.  I see it coming in at around 2.2-2.4th/s at 1200w, but that's just my guess.  The only real question is the price.  If it's up around $1800 like the original was, it's a hard sell.  If it's down around $1400 or lower, then it's a good unit.  If it's around $1000, then back up the truck...

If you aren't too concerned about noise or a little extra power, you could do the "blue wire mod" - i.e. clip it - and it'll run full speed all the time.