Mark Phillips wrote: > Are the system writes limited? Not if your system is actively doing > voicemail etc and you have a pretty steady flow of calls coming and > going. I get maybe 15-20 VM's a day and about 60 calls. My VM's produce > 3 types of file as well as index's etc. When I delete the message at > least 4 writes happen for a total of getting on for 300 writes a day. > And that's just the ones I know about. What about my other system users? > > A CF card is only good for a few million writes.
1,000,000/300 = many more moons than either of us will be alive. With wear leveling, the same sector isn't being written to each write. The load is spread around. You should get years of use out of a CF card the way Astlinux is configured. If you're paranoid, change the card once a year. > Before I get too committed to this line; I am right in thinking that the > genunion is a replacement for the keydisk? If so then IMHO this is a > step backwards. You can use a keydisk AND unionfs partition if you so choose. Nothing stopping you from doing so. > The ability to pull a working USB stick and shove it into a replacement > PBX has more value that I can measure. If you're paranoid, you'd be better off using rsync to copy the data on a regular basis. You don't seem to be concerned about writes to your USB thumb drive. That's going to fail well in advance of a good CF card. > Mark > > Perhaps the speed isn't faster > On Tue, 2008-10-14 at 13:29 -0500, Darrick Hartman wrote: >> Mark Phillips wrote: >>> I think that the OS is NOT picking up the USB stick for it's own use. >>> >>> I'll try the /dev/hda approach rather than /dev/sda but I thought the >>> whole point of using s CF card and USB combo was that the CF card was >>> write cycle limited as well as pretty slow. >>> >> You really think that a USB drive is going to be faster? The number of >> writes that make it to a CF card are somewhat limited. I would be >> surprised if you got less than several years of use from a Sandisk CF >> card of reasonable size (1GB or larger). With the wear leveling >> mechanisms, you should be good covered for a much longer period. There >> was some discussion about this on the Soekris mailing list late last >> week or early this week--it all blends together these days. >> >> With the runnix/unionfs model you should be fine with the one device. >> The OS upgrade was the biggest reason for using two devices in the past. >> By removing the 'dd' install method and only requiring copying a few >> files to the 'os' directory, the unionfs (and optionally keydisk) >> partitions can remain through upgrades without problem. >> >> Darrick >> ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Astlinux-users mailing list Astlinux-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/astlinux-users Donations to support AstLinux are graciously accepted via PayPal to [EMAIL PROTECTED]
