I'm glad your approach is working for you! Excellent!
Having worked in IT for 30 years or so, I did my best to tap into my
professional experience as I volunteer my capabilities for the station.
I still hold to my position that more than any other component, RAM is best
suited to handle "write-thrashing" for the life of the system.
Physical moving devices (HDs) obviously are not, and my understanding is it's
not wise to use an SSD for a write-thrashing role either.
A 1GB RAMdisk will hold an hour of data while recording (WAV + 320k MP3 + 128k
MP3 simulaneously), then move that recording to non-volatile storage. Given
that this is 24x7, writing to non-volatile storage (HD or SSD) only once an
hour, as opposed to every few seconds seems very sensible to me, even with the
risk of a power outage. A UPS easily helps mitigate that issue.
Just a side note, I also work for an Enterprise Data Center, and discovered
they use the RAMdisk approach on a much larger scale.
It was the only way to handle the quantity of syslog data they have. In their
case, physical storage could not handle the data rate of the syslogging. Same
thing; build up an hour's worth, then move off to physical storage. Keep going.
Anyway, it's just another way of doing things :)
I hope the info helps, and good luck!
Cheers,
Rick
KMUZ Engineering
________________________________
From: Gavin Stephens <[email protected]>
To: Rivendell Users Group <[email protected]>
Sent: Monday, September 22, 2014 4:38 AM
Subject: Re: [RDD] Looking for Looping Software to record Broadcast
Interesting idea.
However, then won't you wear your RAM out instead? That's also a lot of
audio to lose if a fault should arise such as a power brown out. You could
also switch to solid state drives and just replace often enough.
I'm back in Windows now but what I do is change the allocation table size to
the largest for the hard drive that contains all my audio files. They're all
wavs, so the larger allocation table size isn't that much of an efficiency
issue. I also keep my file names to less than 8 characters (so it doesn't
have to do a long file name lookup back to the 8.3 file name) and make sure
any indexing is switched off anywhere. I also don't use anti-virus on an air
PC.
This helps reduce hard disk access to a minimum and when it does, it
reads/writes in larger chunks more suitable for the files I use rather than
lots of little reads and writes.
Failing that, replace your hard disc drive on a regular schedule, ie: once a
year etc... as part of a maintenance plan.
So far I have never had heads give up on me. The motor for the disc seems to
die most of the time I lose drives which is few and far between.
----- Original Message -----
From: "Rob Landry" <[email protected]>
To: "Rick" <[email protected]>
Cc: <[email protected]>; "'User discussion about the Rivendell
Radio Automation System'" <[email protected]>
Sent: Monday, September 22, 2014 11:02 PM
Subject: Re: [RDD] Looking for Looping Software to record Broadcast
>
>
> On Sun, 21 Sep 2014, Rick wrote:
>
>> - Everything recorded to ramdisk, then moved to physical HD once hourly
>> recording is complete (prevents killing your HD by constantly writing to
>> it
>> during recording).
>
> I've never encountered that problem. Where did you learn about it?
>
>
> Rob
> _______________________________________________
> Rivendell-dev mailing list
> [email protected]
> http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
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