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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