Learn how to a build a cloud-first strategyRegister Now

x
?
Solved

FTP Connections maximum?

Posted on 2004-11-03
3
Medium Priority
?
3,818 Views
Last Modified: 2008-01-09
Hello, lets consider you run www.download dot com and other mass downloading websites and lets consider that you have one IIS server.  

What is a realistic maximum FTP connections?  

What sort of transfer rate would that be?

Lets consider that you are on an Host with 100Mbit/sec connected to the net.  I am wondering how much an ISP would throttle your server so you don't max-out their internet pipe.  And IIS FTP service, would it strugle with over 25 connections at a time?  Whats realistic?

Dave

0
Comment
Question by:DaveRowland
  • 2
3 Comments
 
LVL 34

Expert Comment

by:Dave_Dietz
ID: 12483455
What kind of hardware are you running on the server?

How much memory and how fast a connection to the host ISP?

As far as Concurrent FTp connections I believe the IIS FTP service has been tested with upwards of 10,000 concurrent connections.

There is a theoretical upper limit of somewhere around 60,000 connections simply becuase you'd run out of ports/sockets, but the realistic maximum is probably more in the 5-10,000 reange depending on what hardware you're using.

As far as the ISP side of things, that will depend entirely on your ISP and your contract with them.

Dave Dietz
0
 
LVL 1

Author Comment

by:DaveRowland
ID: 12483794
Dave, we not running anything currently, but if you want to see what I am doing, then see if you can see my other questions posted.  

I am supprised tat 10,000 concurrent connections, I just feel that sort of figure to be impossible on a standard FTP/IIS host deal.

I guessed processor/memory would come into it, but it is judging what is possible with deals out there.  I could be transfering 400-2000 concurrent connections of 10-20MB but want to know if in practice this is realistic on an American or UK host.  Would I just flood the host?  Anyone got any experience of this?



0
 
LVL 34

Accepted Solution

by:
Dave_Dietz earned 750 total points
ID: 12485167
If you have enough memory to handle the creation of 10,000 sockets (16k each if I remember correctly) as well as enough memory to reliably run the rest of everything else on your server, you have enough CPU horsepower to back it up (a pair of higher end Xeon's should do) and a fastenough pipe to handle the traffic 10,000 connections isn't unreasonable.

Whether you'd flood you host or not depends on the host.  Mom and Pop or local smaller ISPs might not be able to handle this kind of flat out traffic but any larger reputable host should be able to do it, however if you're looking at having 1000 concurrent connections running at 20MB/s as your average traffic I would suggest you work out some sort of flat pricing plan ahead of time with whatever host you choose to work with.

Dave Dietz
0

Featured Post

Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

What is an ISAPI filter?   •      It's an assembly (.dll file) that can add or change the way IIS works.   •      They can be enabled globally for your web server or on a site-by-site basis.   When the IIS server receives a request, enabling the ISAPI fi…
Prologue It is often required to host multiple websites on a single instance of IIS, mostly in development environments instead of on production servers. I am sure it is not much a preferred solution on production servers but this is at least a pos…
This video shows how to quickly and easily deploy an email signature for all users in Office 365 and prevent it from being added to replies and forwards. (the resulting signature is applied on the server level in Exchange Online) The email signat…
Despite its rising prevalence in the business world, "the cloud" is still misunderstood. Some companies still believe common misconceptions about lack of security in cloud solutions and many misuses of cloud storage options still occur every day. …
Suggested Courses

810 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question