Btcache in Kolkata. ISP's offering high download speeds

Well this 30TB is actually when for the first time Alliance started btcache, that is 11months ago, I guess by the time being they have upgraded the Network Storage when users started to flood. Its actually network storage hard drives attached to racks with greater transfer speeds. Something like this

These hard drives and their system are pretty much completely different, except for the hard-drive component itself. The system has some very cool and very configurable software involved which allows the sysadmin to finetune what/how much/for how long etc files should be stored. The hard drives in these pictures are simply so you can download stuff while your computer is off or your laptop is not at home... I believe some of them have web interfaces so you could theoretically add a torrent to your download queue before leaving work and it would be done when you reached home so you can immediately put your feet up and plug it in to your Ethernet (or USB) ready TV.

...both are cool, but for different reasons :)

With the increase in content I think now they have added more NAS to their racks. And also for the first when user is downloading a file if at the same time other users also downloading the same movie or file then every users get increased download speeds.Its like i download some chunks and share at Lan speed in torrent to other Alliance user and he does the same vice versa. Everytime btcache is not needed. And if any user seeds a particular torrent who is on the same network then also user will get above 800KBps transfer rate on Utorrent even if it isn't in caching

I doubt they've needed to add more storage as yet - that would just be unnecessary expenditure on their part since they're not aiming to archive everything that every single user downloads, just the commonly accessed stuff. What I've often seen on my network is that when myself and someone else is downloading the same file at the same time, then his client will download some chunks from abroad, and mine will download some other chunks also from abroad, and then we'll share each others chunks at high speeds (being local peers) which results in 100% of filesize being downloaded (so say, a 1GB file means between 2 or more users, I've actually only used 1GB of my International bandwidth instead of having to have downloaded it twice or more).
 
^^ They started with a 30TB setup. Assuming now they have upgraded considering the fact too many users have joined the peering group.
 
May be not bad, but honestly 30TB could be filled up in not too much time.. How do they manage up when the server gets filled up? Alliance has been offering this (peering plans) for quite sometime now, I have gone through the forum and in not much time found most users to download 100's of GB in a month.. If you do the math, 30TB could be filled up in a flash.. Do they delete old data off the server to balance the limits? I haven't seen Meghbela offer peering plans :|

Read the passage you quoted again ;)

As mentioned: Plus, it's dynamic - old content that isn't getting accessed anymore gets purged to make way for new stuff.


@Siddhartha Dutta You seem to be decent downloader on your own, tell me the probability of you finding and downloading something you need and findout the file is peered?

In my experience, it's pretty random. Files which receive a lot of attention are more likely to be stored but it's not always guaranteed, and, the older the torrent, the less likely it will be stored. You can't really find out what's peered until your torrent client talks to the tracker and/or exchanges peer information.
 
Got info from Alliance employee facebook page this is the server they use :iomg:




Need detail info from mg carley on this :eyeroll:

----------

@Siddhartha Dutta You seem to be decent downloader on your own, tell me the probability of you searching and downloading something you need and then you found out that the file is peered?

well they have a site called TorBox.net which gives a full list of all the files which are in peering and I can view/search it from there making it easier
 
^^ They started with a 30TB setup. Assuming now they have upgraded considering the fact too many users have joined the peering group.

Yeah, I hope they did.. Btw what is your upload speed in torrents?


Read the passage you quoted again ;)

As mentioned: [/FONT][/COLOR]



In my experience, it's pretty random. Files which receive a lot of attention are more likely to be stored but it's not always guaranteed, and, the older the torrent, the less likely it will be stored. You can't really find out what's peered until your torrent client talks to the tracker and/or exchanges peer information.

Thanks for the clarification..
I have talked with Alliance a couple of days ago, they said about TorBox.net.. According to them ONLY whatever is listed on that site is peered.. Suppose I download a file XYZ for the first time and it gets cached to the server so does that means the file will be automatically listed on Torbox?
 
^^ They started with a 30TB setup. Assuming now they have upgraded considering the fact too many users have joined the peering group.

As mentioned, I doubt it because of the rotation of content: they're not aiming to cache the whole Internet here, so it has very little relevance as to how many users have joined the peering group - all that happens when more users become peers is save me more bandwidth!

If I have 10,000 users all downloading the latest episode of "The Big Bang Theory" then I can pretty much guarantee that it will be in my cache pretty quickly. I can increase that to 30,000 users but I don't need more storage because it's still the same file - just instead of saving 9,999 * 175MB (PDTV rip) I'll be saving 29,999 * 175MB (which if we assume a wholesale rate of say Rs3/GB = Rs5,126 for 10k users or Rs15,380 for 30k users in net savings just for that file).

Or if half of them download the 720p version at say 512MB and the other half stick to standard-def then the savings can be modified accordingly to 7500+2563=Rs10,063 for 10k users and 22,500+7690=Rs30,190 for 30k users for the combination of 720p & SD rips.

All while increasing my direct cost by just a few rupees in hard drive space - I haven't had to treble the amount of space, and I won't in the too near future either, because when requests for that episode die down, the system will purge them from it's cache and that space will become free for the next episode or season or something else entirely.
 
Yeah, I hope they did.. Btw what is your upload speed in torrents?

My package is 750Unlimited

On peered network upload speed is 1.8mB/sec and on other networks during day time 60-70kB/sec and during night 300-380kB/sec. Download speed is also the same.

----------

I have talked with Alliance a couple of days ago, they said about TorBox.net.. According to them ONLY whatever is listed on that site is peered.. Suppose I download a file XYZ for the first time and it gets cached to the server so does that means the file will be automatically listed on Torbox?

No I have seen many files which are not in torbox peering list marked with green dot (non peered ones marked with red) but when i download it from link-removed,link-removed, etc etc I get peering speed upto 1.9mB/sec but the same file is not in torbox list when searched. Already torbox is so overloaded it does not keep track of all files nowadays :(
 
My package is 750Unlimited

On peered network upload speed is 1.8mB/sec and on other networks during day time 60-70kB/sec and during night 300-380kB/sec. Download speed is also the same.

----------



No I have seen many files which are not in torbox peering list marked with green dot (non peered ones marked with red) but when i download it from link-removed,link-removed, etc etc I get peering speed upto 1.9mB/sec but the same file is not in torbox list when searched. Already torbox is so overloaded it does not keep track of all files nowadays :(


I thought you were on 1050 plan.. I guess the speeds on your first post was when you were on the 1050 plan, right?

Oh, seems Torbox is only good for reference..
 
As mentioned, I doubt it because of the rotation of content: they're not aiming to cache the whole Internet here, so it has very little relevance as to how many users have joined the peering group - all that happens when more users become peers is save me more bandwidth!

If I have 10,000 users all downloading the latest episode of "The Big Bang Theory" then I can pretty much guarantee that it will be in my cache pretty quickly. I can increase that to 30,000 users but I don't need more storage because it's still the same file - just instead of saving 9,999 * 175MB (PDTV rip) I'll be saving 29,999 * 175MB (which if we assume a wholesale rate of say Rs3/GB = Rs5,126 for 10k users or Rs15,380 for 30k users in net savings just for that file).

Or if half of them download the 720p version at say 512MB and the other half stick to standard-def then the savings can be modified accordingly to 7500+2563=Rs10,063 for 10k users and 22,500+7690=Rs30,190 for 30k users for the combination of 720p & SD rips.

All while increasing my direct cost by just a few rupees in hard drive space - I haven't had to treble the amount of space, and I won't in the too near future either, because when requests for that episode die down, the system will purge them from it's cache and that space will become free for the next episode or season or something else entirely.

Awesome calculation and explanation :solid:

----------

I thought you were on 1050 plan.. I guess the speeds on your first post was when you were on the 1050 plan, right?

Ya now I am on 750Plan.

----------

All while increasing my direct cost by just a few rupees in hard drive space - I haven't had to treble the amount of space, and I won't in the too near future either, because when requests for that episode die down, the system will purge them from it's cache and that space will become free for the next episode or season or something else entirely.

But many old good movies whose international torrents have dead seeders, filehosting(rapidsahre,fileserve etc) deadlinks but those movies I found in Torbox and filmocean with green peer dots.
 
Got info from Alliance employee facebook page this is the server they use :iomg:




Need detail info from mg carley on this :eyeroll:



Didn't I mention that it's more or less a bunch of standard 2U servers?

well they have a site called TorBox.net which gives a full list of all the files which are in peering and I can view/search it from there making it easier

This is helpful, though grey-area legally speaking... if that site were mine I'd probably close it to everyone except IP blocks I wanted to deal with and let TPB etc take the heat (since the .torrent files they link to are just on torcache.net anyway).
 
Back