ECC RAM failure data - jre

[jay-R5TnC2l8y5lBDgjK7y7TUQ at public.gmane.org (jay-R5TnC2l8y5lBDgjK7y7TUQ at public.gmane.org)]

I know my new router ram (2x1gb) ran memtest over night with out an error. Unfortunately this is the only experience iv had with ecc in 8 years or so.  But I suspect its much like everything else in that there are a lot more variables than just ecc or no ecc. 

------Original Message------
From: john_re
Sender: 
To: L BLU
Sent: Feb 26, 2009 6:24 AM
Subject: ECC RAM failure data   - jre

Do you use ECC RAM? Do you have any data about failure rates?

I'm evaluating this for a system with 8GB DRAM, &
http://en.wikipedia.org/wiki/Dynamic_random_access_memory#Errors_and_error_correction
says
"Tests[ecc]give widely varying error rates, but about 10-12upset/bit-hr
is typical, roughly one bit error, per month, per gigabyte of memory.

In most computers used for serious scientific or financial computing and
as servers, ECC is the rule rather than the exception, as can be seen by
examining manufacturers' specifications."


So, for that data 8GB DRAM is about 8 errors per month, ie about
one per 3-4 days.

What rates do you have?
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