Thanks, Lonnie, for the info.

So, I will keep it running without any modification. The 2GB card is a bit 
older and has already seen some usage, but not too much. I may also switch 
to a newer 4GB SLC card, which should have even less wear.

Cheers,

Michael

Lonnie Abelbeck wrote:

> 
> On Apr 26, 2010, at 9:41 AM, Michael wrote:
> 
>> Hello
>> 
>> I am using astlinux 0.7.1 on an alix2c3 board with a 2GB CF card.
>> 
>> As far as I can see the system is optimized to reduce flash writes as
>> much as possible.
> 
> Yes, part of AstLinux's special sauce.
> 
> 
>> I am however wondering what writes are happening every couple of minutes
>> to astdb? There are nearly no entries in the db and they are not
>> changing. Still the file is written to in irregular intervals (about once
>> every 5 to 10 min). No calls are being done at the time of testing.
>> 
>> That would amount to more than 75000 writes each year, which seems to
>> wear down the CF card significantly, I guess.
>> 
>> 1.) Is this the normal behaviour of Astlinux (or something special in my
>> installation)?
> 
> Normal, asterisk at work.
> 
> 
>> 
>> 2.) Will this destroy my CF card in foreseeable time?
> 
> Probably not.
> 
> NAND Write Endurance:
> http://www.memkor.com/en/technology/414we.html
> 
>>From my own personal experience, I have 3-4 year old SanDisk 512M CF
>>cards, that have been running continually, and abused in test Soekris
>>boxes, so far no CF media problems.  Though I would't be shocked if one
>>had failed in that time.
> 
> The newer, larger SanDisk CF cards, should be even better.
> 
> 
> Lonnie
> 
> 
>> 
>> 3.) Should I move the astdb file to a RAM disk and sync it via cron to
>> the hard drive?
>> 
>> Thanks for any help.
>> 
>> Michael
> 
> 
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