[ale] ECC RAM failure data - jre

Greg Freemyer greg.freemyer at gmail.com
Thu Feb 26 08:16:03 EST 2009


I believe that is 8 corrected errors per month.

Is that normally tracked? Trackable?



On 2/26/09, john_re <john_re at fastmail.us> wrote:
> 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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