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Please advise about hardware

turalo
Posts: 55
 Member Since:
2006-11-14
Submitted by turalo on Sat, 02/06/2010 - 5:26am.

Hi to all :)

I have this problem with our asterisk server, it's an AMD 3.2 with 2 GB of ram and 100gb hdd.
It's an old machine like 5-6 years old, we using it for office and external extension with contexting enabled.
Now we experiancing some problems lately, sometimes we loos the connection, while talking with other side I get silence,
just nothing. than I hung up and call again, and also sometimes we must wait long to get connected. so normaly you make a call and in 10 seconds
you hear other side ringing. But in our case this can take in some cases even to 1 minute or some like that. I have a dedicated internet fiber connection of 30MB up and down, it's a colocation.

So I was thinking maybe this is because the server is old and it's an AMD.
But now i'm sitting with question which server to buy, and what will it deliver.

for example if I will buy :

Dual Xeon 3.2
8 GB ram.
200 GB hdd
How many concurent calls will I be able to make ?

or if it will be an
Dual core duo
with 12 GB ram,
200 GB hdd
how many calls at same time I will be able to make ?

please can somebody advise or tell about own experiance in this case.

thanks.

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bubbapcguy
Posts: 3774
 Member Since:
2006-06-02
hardware
Sat, 02/06/2010 - 9:01am

you are going WAY over kill.

you will be only needing upto 4 gig of ram and the dual core will be wasted on the PBX

tb is only 32 bit and it does not use more than 4 gig of ram nor does it really use the dual xeon



mustardman
Posts: 1289
 Member Since:
2006-06-18
Whatever CPU/Memory
Sun, 02/07/2010 - 12:39pm

Whatever CPU/Memory configuration you choose. If this is a real business that needs a dependable phone system, get Supermicro hardware. You won't be sorry.



mkleine
Posts: 206
 Member Since:
2007-04-22
You might want to figure out
Sun, 02/07/2010 - 6:27pm

You might want to figure out what your current issue is, before you invest in new hardware.

Why are the calls dropping? I had similar problems and found some dirt in the T1 connector that was causing flaky data transfer from the trixbox to the provider. Only one pin was affected, so no errors showed up on my box, only on the telco side. Check your call log while this happens and you can find what the issues might be.

Processor and memory here don't do much. I've got 2gb and it's plenty. We can run a full T1 and not see any processor load. Conference calls may go up to 3% load, but that's never a big issue.

You might buy new hardware and still have the problem.



stechnique
Posts: 733
 Member Since:
2008-02-21
Granted it could always be
Mon, 02/08/2010 - 5:54am

Granted it could always be networking issues which is worth investigating, but I've seen problems like this on AMD servers and after pulling my hair out for months I finally replaced the servers for Intel and everything is A-OK with same configs and environment. bubba is right though you're going overkill on your new specs, even if your problem is hardware related, it's not performance-related, ie an equivalent Intel-based trixbox-certified box would probably have no problems.



turalo
Posts: 55
 Member Since:
2006-11-14
Interesting
Mon, 02/08/2010 - 6:18am

So what you guys saying is that any ram more than 4 GB has no use, so all of the asterisk distro's cannot go above 4 gb ?
or is this only on trixbox ?
about the network you are right, I have had this experience to, that's why that was the first thing to check which I did.

and how can I calculate maximum channels that I can achieve with a server ? I"m planning to connect maybe 200-500 extensions, not all of them will call at same time, but I need to know how many will be able to call if I'll have an intel dual xeon 2.8mhz, with 4gb of ram. How many concurrent calls can it handle ?
how do you calculate maximum with asterisk ?
and also I want to let you know I'm not using any T1 E1 or analog lines. I'm going to use it only VOIP-VOIP, so both inbound and outbound is voip. Right now is connected with 1 network card 100mb intel. On a dedicated 30mb fiber.
does double connection make it better or not ? I mean I have 2 net cards on my server, 1 connected, is it better to connect them both and have 2 connections ? will it make call quality better ?

thanks for all replies.



bubbapcguy
Posts: 3774
 Member Since:
2006-06-02
ram
Mon, 02/08/2010 - 6:55am

The limit on the ram is a Linux 32 bit thing, there is no 64 bit trixbox as of yet.

As for as how many calls, well that is a numbers game, depends on codec used, call recording..blah..blah

As for dual CPU's Asterisk itself is not built to take advange of a dual CPU system, yet.

http://www.voip-info.org/wiki/view/Asterisk+dimensioning



SkykingOH
Posts: 9541
 Member Since:
2007-12-17
Quote: As for dual CPU's
Mon, 02/08/2010 - 9:44am
Quote:
As for dual CPU's Asterisk itself is not built to take advange of a dual CPU system, yet.

That is news to be Bubba, the page you quote discusses SMP and we are running testing an 8 way bare metal box as our 4 way is getting above 50%

--

Scott

aka "Skyking"



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