[asterisk-users] RAMDisk vs Extarnal server for recording

Robin robin at zoap.org
Thu Oct 22 04:50:47 CDT 2009


@Matt: will check that one out, thanks

@David: will do a search in the archives to see if I can find something
there :) thanks!

as soon as my setup is done and working correctly, I'll post the results
back here.

On Wed, Oct 21, 2009 at 21:19, Matt Florell <astmattf at gmail.com> wrote:

> On 10/21/09, David Backeberg <dbackeberg at gmail.com> wrote:
> > On Wed, Oct 21, 2009 at 7:36 AM, Robin <robin at zoap.org> wrote:
> >  > Thanks for your response.
> >  > The hardware I have now is not sufficient to set up a ramdisk (just 4
> gb)...
> >  > But memory is rather cheap nowadays. If i'd buf up the server with 8
> extra
> >  > gigs for use as a ramdrive, do you think that might be enough to
> record
> >  > between 30-60 simultanious streams? Or should it be way more?
> >
> >
> > I'm doing ramdisk recordings of about the same number of streams
> >  you're talking, in 4GB.
> >  I move out completed recordings once every 15 minutes or so via NFS,
> >  and as such, I never use very much of the ramdisk. There's no rule
> >  that says you have to use the whole 4GB of ram for recordings. I'm
> >  probably staying below 100MB or so. Strictly speaking, I'm using both
> >  ramdisk and external server, but the external server is just a
> >  centralized system with larger disks.
> >
> >  However, I know that this arrangement isn't working for my load which
> >  is about to double again, so I'm upgrading to better hardware (and
> >  maintaining the status quo with my asterisk arrangement)
> >
> >  If you read every single title of asterisk-users in the last few
> >  months, you'll find a similar discussion on this topic which went
> >  through the pros and cons of ramdisk versus centralized server.
> >
> >  Somebody at that time mentioned particular names of programs that can
> >  do the centralized recordings by doing network hardware level
> >  replication and picking off the SIP packets. I've never done this, but
> >  if you find that mailing list thread you'll be able to find names of
> >  people who say they've done that.
>
> We have a few clients that use Oreka(from OrecX) that does
> network-based SIP packet-capture recording. It works very well on
> their multi-server setups and the core of Oreka is Open Source.
>
> MATT---
>
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