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Concurrent HTTP connections - 11.Jun.2007 10:21:53 AM

mbe@systemtech.dk

Posts: 2
Joined: 11.Jun.2007
Status: offline

Hi

I would like to hear from somebody, that have experience with large http / https publishing solutions.

I have previously created multible solution using both ISA2004 and 2006.
This new request I have been given, is somewhat different.

A customer is looking to place an array of ISA servers in front of a web server farm consisting of 10 high performing webservers.
He would like to use the new Webfarm functionality in ISA 2006 as a loadbalacing solution.
He needs to support up to 10.000 concurrent connections, where approx. 90 % will be http requests and 10 % will be https requests.

The ISA servers will be new powerful servers, and will be running ISA NLB.

I am having a little bit of a problem finding performace info on a dedicated webpublishing solution.

Regards,

Michael Busack Bertelsen

Post #: 1

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RE: Concurrent HTTP connections - 28.Jun.2007 9:48:48 AM

tshinder

Posts: 47663
Joined: 10.Jan.2001
From: Texas
Status: offline

From private calculations using proprietary algorithms done at the Shinder Labs [TM], each ISA Firewall in the array can handle 2000 SSL connections and 37589 HTTP connections.

YMMV.

HTH,
Tom

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Thomas W Shinder, M.D.
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Prowess Consulting http://www.prowessconsulting.com/
Blog: http://blogs.isaserver.org/shinder/

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(in reply to mbe@systemtech.dk)

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RE: Concurrent HTTP connections - 29.Jun.2007 7:02:34 PM

Jason Jones

Posts: 2256
Joined: 30.Jul.2002
From: United Kingdom
Status: online

Have you seen the capacity planner?

http://www.microsoft.com/isaserver/capacityplanner.swf

I would start with this as a basic guide and then use the ISA2k6 performance paper http://www.microsoft.com/technet/isa/2006/perf_bp.mspx to monitor performance and then scale out the array as necessary.

I would imagine two well spec'd servers would be a good starting point or maybe three if you want to be able to still cope with peak load in the event of a single server failure (e.g. an n+1 model).

Cheers

JJ

_____________________________

Jason Jones (MVP)

Silversands Limited http://www.silversands.co.uk
My Blog: http://blog.msfirewall.org.uk/

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(in reply to tshinder)

Post #: 3

RE: Concurrent HTTP connections - 1.Jul.2007 11:55:22 AM

mbe@systemtech.dk

Posts: 2
Joined: 11.Jun.2007
Status: offline

Hi

I think I will start off with two server, and go from there.

I had not seen the capacity planner before. It will be most useful i future designs.

Thank you both for your replies.

Regards,

Michael Busack Bertelsen

(in reply to mbe@systemtech.dk)

Post #: 4