Messages in this thread | | | Date | Thu, 8 May 2008 16:59:44 +0200 | From | Willy Tarreau <> | Subject | Re: Compact Flash Question |
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On Thu, May 08, 2008 at 10:27:14AM -0400, Lennart Sorensen wrote: > On Wed, May 07, 2008 at 06:46:25PM +0200, Bart Van Assche wrote: > > Silicon Systems CompactFlashes are the among the most reliable > > CompactFlashes I have used in embedded devices. See also > > http://www.siliconsystems.com/silicondrive/whitepapers/SSWP03-Endurance-R.pdf > > for a whitepaper that explains their wear leveling and error > > correction algorithms. Furthermore, Silicon Systems has a technology > > called SiSMART that allows to monitor by how far the CompactFlash is > > worn out, such that it can be monitored whether or not it is time to > > replace the CompactFlash. (Note: I am not affiliated in any way to > > Silicon Systems.) > > We too have switched to Silicon Systems and are very happy with them. > And even industrial temperature versions are hardly expensive. They may > cost more than you pay for a generic slow piece of junk at a retail > store, but you are getting a better card.
Interestingly, we once got a bunch of those and had a lot of problems with them. Typically unbootable systems. We finally noticed that there was a real corruption problem, because 3 MD5s of the kernel in a row returned 3 different values. Our provider assured us that he never heard about that, and insisted that we try again on a new batch. We have had no trouble since. I guess we really got a bad batch. At least it was noticeable early in the deployment process (the worst ones being a few days after installation). However, we never had any problem with PQI industrial.
> Len Sorensen
Willy
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