[asterisk-users] RAMDisk vs Extarnal server for recording

[Zoaaaaa]

There are 2 issues i think, one is the seek time on harddisks and the 
lack of a big buffer in Asterisk (saving 10 streams at the same time 
will cause a loooot of random writes).
The other one is the interrupts being taken up by the harddisk.

So an SSD might help, saving to an network drive might help (it moves 
the issue to another server, where it might not cause a problem), 
buffering to ram (but you will lack space).
The best solution depends on your exact hardware and the amount of 
writes you want to do.

Buffering to a ramdrive before moving it over NFS seems like the best 
idea to me.

Zoa

Robin wrote:
> I'm having loads of problems with recordings, as in crappy audio 
> quality and lost pieces of the recordings. I've been searching for a 
> solution and the solutions i find on the interwebs include a ramdisk, 
> for local recording, or another machine, handling the recording. I 
> guess the ramdisk would be the "easy" solution and the external 
> machine would be  little harder to set up. I do actually prefer the 
> external machine, but i'm not exaclty sure how to set that one up... 
> The reason I prefer the external machine, is that the recording have 
> to be moved to an external machine anyway. Although I've come across a 
> post somewhere, talking about recording to ramdisk and then move the 
> files over a crosscable directly to another disk over 1000mbit. Which 
> sound nice as well...
>
> What do you advise for bringing serverload down and get rid of the 
> harddisk bottleneck? Is a ramdisk a better solution then an external 
> machine? And if so, why?
>
> Sorry about this pro-con question, but I cannot find an answer which 
> compares these pro-cons anywhere.
>
> thanks,
>
> robin
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